Reference Range Interval Table

Reference Range / Interval Table

Color:   Blue  =References Included
Specimen: P=Plasma  S=Serum  U=Urine  WB=Whole blood  JF=Joint fluid  CSF=Cerebral spinal
Type:  BDef=Borderlinedeficient  Def=Deficient  Ex=Excessive  BH=Borderline high  Des=Desirable  H=High  Tox=Toxic  Rx=Therapeutic  BHR=Borderline High Risk  HR=High Risk  N=Normal  C=Critical  L=Low

Analyte	Population	Method	Description	Specimen	Type	USUnits	SIUnits	Refernces	Species	Ref	Synonyms
11-Deoxycortisol	Adult	Immunoassay	8 am sample	S	N	12 to 158 ng/dL	0.35 to 4.56 nmol/L		Human	No
11-Deoxycortisol	Adult		8 am sample	S		12-158 ng/dl	0.34-4.56 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Hydroxyprogesterone	Adult	Immunoassay	Female Follicular Phase	S	N	20 to 100 ng/dL	0.6 to 3 mmol/L		Human	No
17-Hydroxyprogesterone	Adult	Immunoassay	Female Mid-cycle Peak	S	N	100 to 250 ng/dL	3 to 7.5 mmol/L		Human	No
17-Hydroxyprogesterone	Adult	Immunoassay	Female Luteal Phase	S	N	100 to 500 ng/dL	3 to 15 mmol/L		Human	No
17-Hydroxyprogesterone	Adult	Immunoassay	Female Postmenopausal	S	N	<70 ng/dL	<2.1 mmol/L		Human	No
17-Hydroxyprogesterone	Adult	Immunoassay	Male	S	N	5 to 250 ng/dL	0.15 to 7.5 mmol/L		Human	No
17-Hydroxyprogesterone	Adult		Male	S		5-250 ng/dl	0.15 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Hydroxyprogesterone	Adult		Menstruating - Follicular phase	S		20-100 ng/dl	0.6-3.0 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Hydroxyprogesterone	Adult		Menstruating - Midcycle peak	S		100-250 ng/dl	3.0-7.5 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Hydroxyprogesterone	Adult		Menstruating - Luteal phase	S		100-500 ng/dl	3.0-15 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Hydroxyprogesterone	Adult		Postmenopausal	S		Less than or Equal to 70 ng/dl	Less than or Equal to 2.1 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
17-Ketosteroids	Adult	Modified Zimmerman	Female	U	N	5 to 15 mg/24 hrs	17.3 to 52 umol/24 hrs		Human	No
17-Ketosteroids	Adult	Modified Zimmerman	Male	U	N	7 to 20 mg/24 hrs	24.3 to 69.3 umol/24 hrs		Human	No
17-Ketosteroids	Adult			U		3-12 mg/24 hr	10-42micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
5-Hydroxyindoleacetic Acid	Adult			U		<6 mg/24 hr	<31micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	5-HIAA
5-Hydroxyindoleacetic Acid	Adult	HPLC		U	N	<6 mg/24 hrs	<31.4 umol/day		Human	No	5-HIAA
5'-Nucleotidase	Adult	Kinetic Method		S	N	0 to 11 U/L	0.02 to 0.18 ukat/L		Human	No
5'-Nucleotidase	Adult			S		0-11 U/liter	0.02-0.18microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Acetaminophen	Adult	Liquid Chromatography	Toxicity	S	Tox	>120 ug/mL	>794 umol/L		Human	No
Acetaminophen	Adult				Rx	10-30 microgram/ml	66-199 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Acetaminophen	Adult				Tox	>200 microgram/ml	>1324 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Acetoacetate	Adult			P		<1 mg/dl	<100 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Acidity, titratable	Adult			U		20-40 mEq/24 hr	20-40 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Activated Clotting Time	Adult			WB		70-180 sec	70-180 sec	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Activated Protein C Resistance (factor V Leiden)	Adult			P		Ratio >2.1	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Adrenocorticotropin	Adult	Immunoassay		P	N	6 to 76 pg/mL	1.3 to 16.7 pmol/L		Human	No	ACTH
Adrenocorticotropin	Adult			P		6.0-76.0 pg/ml	1.3-16.7 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	ACTH
Alanine	Adult			S		0-35 U/liter	0-0.58microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	ALT, SGPT
Alanine Aminotransferase	Adult	Kinetic Method	Female	S	N	7 to 30 U/L	0.12 to 0.5 ukat/L		Human	No	ALT,SGPT
Alanine Aminotransferase	Adult	Kinetic Method	Male	S	N	10 to 55 U/L	0.17 to 0.92 ukat/L		Human	No	ALT,SGPT
Albumin	Adult	Colorimetry		S	N	3.1 to 4.3 g/dL	31 to 43 g/L		Human	No	Alb
Albumin	Adult	Nephelometry		CSF	N	11 to 48 mg/dL	0.11 to 0.48 g/L		Human	No	Alb
Albumin	Adult			S		3.5-5.5 g/dl	35-55 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Alb
Aldolase	Adult	Kinetic method		S	N	0 to 7 U/L	0 to 7 U/L		Human	No
Aldolase	Adult			S		0-6 U/liter	0-100 nkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Aldosterone	Adult	Immunoassay	Supine, Normal-Sodium Diet	S,P	N	2 to 9 ng/dL	55 to 250 pmol/L		Human	No
Aldosterone	Adult	Immunoassay	Upright, Normal-Sodium Diet	S,P	N	2 time sup to 5 times supi ng/dL	2 time sup to 5 times supi pmol/L		Human	No
Aldosterone	Adult	Immunoassay	Supine, Low-Sodium Diet	S,P	N	2 time sup to 5 times supi ng/dL	2 time sup to 5 times supi pmol/L		Human	No
Aldosterone	Adult	Immunoassay	Urine, Normal-Sodium Diet	U	N	2.3 to 21 ug/24 hrs	6.38 to 58.25 nmol/24 hrs		Human	No
Aldosterone	Adult		Supine, normal-sodium diet	S, P		2-9 ng/dl	55-250 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Aldosterone	Adult		Upright, normal-sodium diet	S, P		2-5 times supine value with normal-sodium diet		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Aldosterone	Adult		Supine, low-sodium diet	S, P		2-5 times supine value with normal-sodium diet		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Aldosterone	Adult		Random, low-sodium diet	U		2.3-21.0 microgram/24 hr	6.38-58.25 nmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Alkaline Phosphatase	Adult	Kinetic Method	Female	S	N	30 to 100 U/L	0.5 to 1.67 ukat/L		Human	No	ALP, Alk Phos
Alkaline Phosphatase	Adult	Kinetic Method	Male	S	N	45 to 115 U/L	0.75 to 1.92 ukat/L		Human	No	ALP, Alk Phos
Alkaline Phosphatase	Adult	Kinetic Method	Heat Fractionated	S	N	20 to 35 %	0.2 to 0.35 ukat/L		Human	No	ALP, Alk Phos
Alpha1-Antitrypsin	Adult	Nephelometry		S	N	76 to 189 mg/dL	0.76 to 1.89 g/L		Human	No
Alpha1-Antitrypsin	Adult			S		85-213 mg/dl	0.8-2.1 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Alpha2-Antiplasmin	Adult	Chromogenic Assay		P	N	80 to 130 %	0.8 to 1.3		Human	No
Alpha2-Antiplasmin	Adult			P		80-130%	0.80-1.30	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Alpha-Fetoprotein	Adult			S		<15 ng/ml	<15 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	AFP
Alpha-Fetoprotein	Adult	Immunoassay	Nonmaternal	S	N	<12.8 IU/mL	<9.92 ug/L		Human	No	AFP
Amikacin	Adult	Immunoassay	Trough	S	Rx	1 to 7 ug/mL	1.7 to 12 umol/L		Human	No
Amikacin	Adult	Immunoassay	Peak	S	Rx	15 to 25 ug/mL	26 to 43 umol/L		Human	No
Amikacin	Adult		Peak		Rx	25-35 microgram/ml	43-60 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amikacin	Adult		Trough		Rx	4-8 microgram/ml	6.8-13.7 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amikacin	Adult		Peak		Tox	>35 microgram/ml	>60 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amikacin	Adult		Trough		Tox	>10 microgram/ml	>17 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amitriptyline	Adult	Liquid Chromatography	Mitrptyline	S	Rx	120 to 250 ug/L	433 to 903 nmol/L		Human	No
Amitriptyline	Adult	Liquid Chromatography	Nortriptyline	S	Rx	50 to 150 ug/L	181 to 542 nmol/L		Human	No
Amitriptyline	Adult				Rx	120-250 ng/ml	433-903 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amitriptyline	Adult				Tox	>500 ng/ml	>1805 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ammonia	Adult	Enzymatic Analysis		P	N	12 to 48 umol/L	12 to 48 umol/L		Human	No
Ammonia	Adult			U		30-50 mEq/24 hr	30-50 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ammonia, as NH3	Adult			P		10-80 microgram/deciliter	6-47 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amphetamine	Adult				Rx	20-30 ng/ml	148-222 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amphetamine	Adult				Tox	>200 ng/ml	>1480 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Amylase	Adult	Kinetic Method		S	N	53 to 123 U/L	0.88 to 2.05 nkat/L		Human	No	Amy
Amylase	Adult	Kinetic Method		P	N	43 to 115 U/L	0.72 to 1.92 nkat/L		Human	No	Amy
Amylase	Adult	Kinetic Method		U	N	4 to 400 U/L	0.07 to 6.67 nkat/L		Human	No	Amy
Amylase	Adult			S		60-180 U/liter	0.8-3.2microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Amy
Amylase	Adult			U		4-400 U/liter	0.07-7.67 nkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Amy
Amylase : Creatinine Clearance Ratio	Adult			U		1-5	1-5	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Androstenedione	Adult	Immunoassay		S	N	50 to 250 ng/dL	1.75 to 8.73 nmol/L		Human	No
Androstenedione	Adult			S		50-250 ng/dl	1.75-8.73 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Angiotensin-Converting Enzyme	Adult	Kinetic Method	Female	S	N	19 to 79 U/L	19 to 79 U/L		Human	No	ACE
Angiotensin-Converting Enzyme	Adult	Kinetic Method	Male	S	N	19 to 95 U/L	19 to 95 U/L		Human	No	ACE
Angiotensin-Converting Enzyme	Adult			S		<40 U/liter	<670 nkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	ACE
Anion Gap	Adult			S		7-16 mmol/liter	7-16 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anion Gap	Adult		Apolipoprotein A-1	S		119-240 mg/dl	1.2-2.4 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anion Gap	Adult		Apolipoprotein B	S		52-163 mg/dl	0.52-1.63 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anion Gap	Adult		Apolipoprotein B:apolipoprotein A-1	S		0.35-0.98	0.35-0.98	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anticardiolipin Antibody	Adult	ELISA	IgG	S	N	0 to 15 GPL units	0 to 15 arbitrary		Human	No
Anticardiolipin Antibody	Adult	ELISA	IgM	S	N	0 to 15 MPL units	0 to 15 arbitrary		Human	No
Anticardiolipin Antibody	Adult		IgG	S		0-15 GPL units	0-15 arbitrary units	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anticardiolipin Antibody	Adult		IgM	S		0-15 MPL units	0-15 arbitrary units	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anti-Glomerular Basement Membrane Antibodies	Adult	ELISA	Quantitative	S	N	<5 U/mL	<5 kU/L		Human	No
Antineutrophil perinuclear autoantibodies	Adult	ELISA	antibodies to myeloperoxidase	S	N	<1.4 U/ml	<1.4 kU/L		Human	No	P-ANCA
Antineutrophil cytoplasmic autoantibodies	Adult	ELISA	antibodies to proteinase 3	S	N	<2.8 U/ml	<2.8 kU/L		Human	No	C-ANCA
Antiphospholipid-Antibody Panel	Adult		Partial-thromboplastin time-lupus anticoagulant screen	P		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Antiphospholipid-Antibody Panel	Adult		Platelet-neutralization procedure	P		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Antiphospholipid-Antibody Panel	Adult		Dilute viper-venom screen	P		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Antithrombin III	Adult	Chromogenic Assay	Functional	P	N	80 to 130 %	0.8 to 1.3 U/L		Human	No
Antithrombin III	Adult	Immunoassay	Immunologic	P	N	22 to 39 mg/dL	220 to 390 mg/L		Human	No
Antithrombin III	Adult		Antigenic	P		22-39 mg/dl	220-390 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Antithrombin III	Adult		Functional	P		80-130%	0.8-1.30 U/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Antithyroid Antibodies	Adult	Immunoassay		S	N	<0.3 IU/mL	<0.3 kIU/L		Human	No
Anti-Xa assay (Heparin Assay)	Adult	Chromogenic Assay	Unfractinated heparin	P	N	0.3 to 0.7 IU/mL	0.3 to 0.7 kIU/L		Human	No
Anti-Xa assay (Heparin Assay)	Adult	Chromogenic Assay	low-molecular weight heparin	P	N	0.5 to 1 IU/mL	0.5 to 1 kIU/L		Human	No
Anti-Xa assay (Heparin Assay)	Adult	Chromogenic Assay	Danaparoid	P	N	0.5 to 0.8 IU/mL	0.5 to 0.8 kIU/L		Human	No
Anti-Xa assay (Heparin Assay)	Adult		Unfractionated heparin	P		0.3-0.7 IU/ml	0.3-0.7 kIU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anti-Xa assay (Heparin Assay)	Adult		Low-molecular-weight heparin	P		0.5-1.0 IU/ml	0.5-1.0 kIU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Anti-Xa assay (Heparin Assay)	Adult		Danaparoid	P		0.5-0.8 IU/ml	0.5-0.8 kIU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Apolipoprotein	Adult	Nephelometry	A-1	S	N	119 to 240 mg/dL	1.19 to 2.4 g/L		Human	No
Apolipoprotein	Adult	Nephelometry	B	S	N	52 to 163 mg/dL	0.52 to 1.63 g/L		Human	No
Apolipoprotein	Adult	Nephelometry	apolipoprotein B:A-1 ratio	S	N	0.35 to 0.98	0.35 to 0.98		Human	No
Arterial Blood Gases (Sea Level)	Adult			WB, arterial				Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Arterial Blood Gases (Sea Level)	Adult		Bicarbonate (HCO3)	WB, arterial		21-30 mEq/liter	21-28 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Arterial Blood Gases (Sea Level)	Adult		Partial pressure of carbon dioxide (PCO2)	WB, arterial		35-45 mm Hg	4.7-5.9 kPa	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Arterial Blood Gases (Sea Level)	Adult		pH	WB, arterial		7.38-7.44	7.38-7.44	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Arterial Blood Gases (Sea Level)	Adult		Partial pressure of oxygen (PO2)	WB, arterial		80-100 mg Hg	11-13 kPa	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Aspartate	Adult			S		0-35 U/liter	0-0.58microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	AST, SGOT
Aspartate Aminotransferase	Adult	Kinetic Method	Female	S	N	9 to 25 U/L	0.15 to 0.42 ukat/L		Human	No	AST, SGOT
Aspartate Aminotransferase	Adult	Kinetic Method	Male	S	N	10 to 40 U/L	0.17 to 0.67 ukat/L		Human	No	AST, SGOT
Autoantibodies	Adult		Antiadrenal antibody	S		Negative at 1:10 dilution	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-double-stranded (native) DNA	S		Negative at 1:10 dilution	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-glomerular basement membrane antibody	S				Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-glomerular basement membrane antibody - Qualitative	S		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-glomerular basement membrane antibody - Quantitative	S		<5 U/ml	<5 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antigranulocyte antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-Jo-1 antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-La antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antimitochondrial antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antineutrophil cytoplasmic autoantibody, cytoplasmic (c-ANCA) - Qualitative	S		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antineutrophil cytoplasmic autoantibody, cytoplasmic (c-ANCA) - Quantitative (antibody to proteinase 3)	S		<2.8 U/ml	<2.8 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antineutrophil cytoplasmic autoantibody, perinuclear (p-ANCA) - Qualitative	S		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antineutrophil cytoplasmic autoantibody, perinuclear (p-ANCA) - Quantitative (antibody to myeloperoxidase)	S		<1.4 U/ml	<1.4 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antinuclear antibody	S		Negative at 1:40 dilution	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-parietal-cell antibody	S		Negative at 1:20 dilution	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-Ro antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antiplatelet antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-RNP antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-Scl-70 antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-Smith antibody	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Anti-smooth-muscle antibody	S		Negative at 1:20 dilution	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antithyroglobulin	S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Autoantibodies	Adult		Antithyroid antibody	S		<0.3 IU/ml	<0.3 kIU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Barbiturates	Adult		Most short-acting		Tox	>20 mg/liter	>88 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bence Jones Protein	Adult	Nephelometry	Kappa	U	N	<2.5 mg/dL	<0.03 g/L		Human	No
Bence Jones Protein	Adult	Nephelometry	Lambda	U	N	<5.0 mg/dL	<0.05 g/L		Human	No
Bence Jones Protein	Adult			S		None detected	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bence Jones Protein	Adult		Bence Jones protein - Qualitative	U		None detected in 50-fold concentrated specimen	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bence Jones Protein	Adult		Quantitative - Kappa	U		<2.5 mg/dl	<0.03 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bence Jones Protein	Adult		Quantitative - Lambda	U		<5.0 mg/dl	<0.05 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Beta2-Microglobulin	Adult	Immunoassay		S,P	N	1.2 to 2.8 mg/L	1.2 to 2.8 mg/L		Human	No
Beta2-Microglobulin	Adult	Immunoassay		U	N	<200 ug/L	<200 ug/L		Human	No
Beta2-Microglobulin	Adult			S		1.2-2.8 mg/liter	1.2-2.8 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Beta2-Microglobulin	Adult			U		Less than or Equal to 200 microgram/liter	Less than or Equal to 200 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Beta2-Microglobulin	Adult			S		<0.27 mg/dl	<2.7 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Beta2-Microglobulin	Adult			U		<120 microgram/day	<120 microgram/day	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
b-Hydroxybutyrate	Adult			P		<3 mg/dl	<300 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bicarbonate	Adult	Calculation		WB, S	N	22 to 26 meq/L	22 to 26 mmol/L		Human	No
Bilirubin	Adult		Total	S		0.3-1.0 mg/dl	5.1-17.0 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bilirubin	Adult		Direct	S		0.1-0.3 mg/dl	1.7-5.1 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bilirubin	Adult		Indirect	S		0.2-0.7 mg/dl	3.4-12.0 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Bilirubin (Direct)	Adult	Colorimetry		S	N	0 to 0.4 mg/dL	0 to 7 umol/L		Human	No	D Bili, Direct, Conjugated
Bilirubin (Total)	Adult	Colorimetry		S	N	0 to 1 mg/dL	0 to 17 umol/L		Human	No	T Bili, Total
Bleeding Time	Adult	Surgicutt			N	2 to 9.5 minutes	2 to 9.5 minutes		Human	No
Bleeding Time	Adult					2.0-9.5 min	2.0-9.5 min	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Brain-Type Natriuretic Peptide	Adult			P		<167 pg/ml (age- and sex-dependent)	<167 ng/liter (age- and sex-dependent)	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	BNP
Bromide	Adult				Tox	>1250 microgram/ml	>15.6 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
C1-Esterase-Inhibitor Protein	Adult	Nephelometry	Antigenic	S	N	12.4 to 24.5 mg/dL	0.12 to 0.25 g/L		Human	No
C1-Esterase-Inhibitor Protein	Adult		Antigenic	S		12.4-24.5 mg/dl	0.12-0.25 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
C1-Esterase-Inhibitor Protein	Adult		Functional	S		Present	Present	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
CA 125	Adult			S		0-35 U/ml	0-35 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
CA 125	Adult	Immunoassay		S	N	0 to 35 U/ml	0 to 35 kU/L		Human	No
CA 15-3	Adult	Immunoassay		S	N	0 to 30 U/ml	0 to 30 kU/L		Human	No
CA 15-3	Adult			S		0-30 U/ml	0-30 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
CA 19-9	Adult	Immunoassay		S	N	0 to 37 U/ml	0 to 37 kU/L		Human	No
CA 19-9	Adult			S		0-37 U/ml	0-37 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
CA 27-29	Adult	Immunoassay		S	N	0 to 32 U/ml	0 to 32 kU/L		Human	No
CA 27-29	Adult			S		0-32 U/ml	0-32 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Calcitonin	Adult	Immunoassay	Female	S	N	2 to 17 pg/mL	2 to 17 ng/L		Human	No
Calcitonin	Adult	Immunoassay	Male	S	N	3 to 26 pg/mL	3 to 26 ng/L		Human	No
Calcitonin	Adult		Male	S		3-26 pg/ml	3-26 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Calcitonin	Adult		Female	S		2-17 pg/ml	2-17 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Calcium	Adult	Colorimetry		S	N	8.5 to 10.5 mg/dL	2.1 to 2.6 mmol/L		Human	No
Calcium	Adult	Colorimetry		U	N	0 to 300 mg/24 hrs	0 to 7.5 mmol/24 hrs		Human	No
Calcium	Adult	Ion-selective Electrode	Ionized	WB	N	1.14 to 1.3 mmol/L	1.14 to 1.3 mmol/l		Human	No
Calcium	Adult			S		9.0-10.5 mg/dl	2.2-2.6 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Calcium	Adult		With dietary calcium 10 mEq/24 hr or 200 mg /24 hr	U		<300 mg/24 hr	<7.5 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Calcium (Ionized)	Adult			WB		4.5-5.6 mg/dl	1.1-1.4 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carbamazepine	Adult	Immunoassay		S	Rx	4 to 12 ug/mL	17 to 51 umol/L		Human	No	Carb, Tegretol
Carbamazepine	Adult				Rx	6-12 microgram/ml	26-51 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carbamazepine	Adult				Tox	>15 microgram/ml	>63 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carbon Dioxide	Adult		Content, sea level	P		21-30 mEq/liter	21-30 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carbon Dioxide	Adult		Partial pressure (PCO2), sea level	WB, arterial		35-45 mm Hg	4.7-5.9 kPa	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carbon Dioxide (Partial Pressure)	Adult	Carbon dioxide electrode	Aterial	WB	N	35 to 45 mm Hg	4.7 to 6 kPa		Human	No	PaCO2, pCO2
Carbon Dioxide Content (Total)	Adult	Carbon dioxide electrode	Total	P	N	24 to 30 mmol/L	24 to 30 mmol/L		Human	No
Carbon monoxide content	Adult			WB			Symptoms with 20% saturation of hemoglobin	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carboxyhemoglobin	Adult	Co-oximetry		WB	N	<5 % total hgb	<0.05 fraction total h		Human	No
Carboxyhemoglobin	Adult		Nonsmoker	WB		0-2.3%	0-0.023	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carboxyhemoglobin	Adult		Smoker	WB		2.1-4.2%	0.021-0.042	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Carcinoembryonic Antigen	Adult	Immunoassay		P, S	N	0 to 3.4 ng/mL	0 to 3.4 ug/L		Human	No	CEA
Carcinoembryonic Antigen	Adult			S		0-3.4 ng/ml	0-3.4 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	CEA
Catecholamines	Adult	HPLC	Epinephrine	U	N	2 to 24 ug/24 hrs	11 to 131 nmol/24 hrs		Human	No
Catecholamines	Adult	HPLC	Norepinephrine	U	N	15 to 100 ug/24 hrs	89 to 591 nmol/24 hrs		Human	No
Catecholamines	Adult	HPLC	Dopamine	U	N	52 to 480 ug/24 hrs	340 to 3134 nmol/24 hrs		Human	No
Catecholamines	Adult	HPLC	Total (Epinephrine + Norepinephrin	U	N	26 to 121 ug/24 hrs	142 to 660 nmol/24 hrs		Human	No
Ceruloplasmin	Adult	Nephelometry		S	N	27 to 50 mg/dL	270 to 500 mg/L		Human	No
Ceruloplasmin	Adult			S		27-37 mg/dl	270-370 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Chlordiazepoxide	Adult	Liquid Chromatography		S	Rx	1 to 3 mg/L	3.3 to 10 umol/L		Human	No
Chlordiazepoxide	Adult				Rx	700-1000 ng/ml	2.34-3.34 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Chlordiazepoxide	Adult				Tox	>5000 ng/ml	>16.7 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Chloride	Adult	Colorimetry		P	N	100 to 108 mmol/L	100 to 108 mmol/L		Human	No	Cl
Chloride	Adult	Colorimetry		U	N	depends on to depends on d mmol/L	depends on to depends on d mmol/L		Human	No	Cl
Chloride	Adult	Colorimetry		CSF	N	120 to 130 mmol/L	120 to 130 mmol/L		Human	No	Cl
Chloride	Adult			S		98-106 mEq/liter	98-106 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Cl
Cholesterol	Adult	Colorimetry	Desirable	S	Des	<200 mg/dL	<5.17 mmol/L		Human	No
Cholesterol	Adult	Colorimetry	Borderline High	S	BH	200 to 239 mg/dL	5.17 to 6.18 mmol/L		Human	No
Cholesterol	Adult	Colorimetry	High	S	H	>239 mg/dL	>6.18 mmol/L		Human	No
Cholesterol (Total)	Adult		Desirable	P		<200 mg/dl	<5.17 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cholesterol (Total)	Adult		Borderline high	P		200-239 mg/dl	5.17-6.18 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cholesterol (Total)	Adult		High			Greater than or Equal to 240 mg/dl	Greater than or Equal to 6.18 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cholesterol, High-density Lipoprotein	Adult		Low	P		<40 mg/dl	<1.03 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	HDL
Cholesterol, High-density Lipoprotein	Adult		High	P		Greater than or Equal to 60 mg/dl	Greater than or Equal to 1.55 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	HDL
Cholesterol, Low-density Lipoprotein	Adult		Optimal	P		<100 mg/dl	<2.59 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDL
Cholesterol, Low-density Lipoprotein	Adult		Near or above normal	P		100-129 mg/dl	2.59-3.34 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDL
Cholesterol, Low-density Lipoprotein	Adult		Borderline high	P		130-159 mg/dl	3.36-4.11 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDL
Cholesterol, Low-density Lipoprotein	Adult		High	P		160-189 mg/dl	4.13-4.88 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDL
Cholesterol, Low-density Lipoprotein	Adult		Very high	P		Greater than or Equal to 190 mg/dl	Greater than or Equal to 4.91 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDL
Cholinesterase	Adult			S		5-12 U/ml	5-12 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Clomipramine	Adult	Liquid Chromatography		S	Rx	150 to 450 ug/L	476 to 1427 nmol/L		Human	No
Clonazepam	Adult	Liquid Chromatography		S	Rx	10 to 70 ug/L	32 to 222 nmol/L		Human	No
Clonazepam	Adult				Rx	15-60 ng/ml	48-190 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Clonazepam	Adult				Tox	>80 ng/ml	>254 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Clot Retraction	Adult	Manual		WB	N	50 to 100 %/2hr	0.5 to 1 /2hr		Human	No
Clot Retraction	Adult			WB		50-100%/2 hr	0.50-1.00/2 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Clozapine	Adult	Liquid Chromatography	Clozapine	S	Rx	150 to 500 ug/L	459 to 1530 nmol/L		Human	No
Clozapine	Adult	Liquid Chromatography	Norclozapine	S	Rx	100 to 450 ug/L	320 to 1440 nmol/L		Human	No
Clozapine	Adult				Rx	200-350 ng/ml	0.6-1.0 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cocaine	Adult				Tox	>1000 ng/ml	>3300 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Complement	Adult	Immunoassay	Total Complement	S	N	63 to 145 U/mL	63 to 145 kU/L		Human	No
Complement	Adult		C3	S		86-184 mg/dl	0.86-1.84 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Complement	Adult		C4	S		20-58 mg/dl	0.20-0.58 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Complement	Adult		Total complement, enzyme immunoassay	S		63-145 U/ml	63-145 kU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Complement	Adult		Factor B	S		17-42 mg/dl	0.17-0.42 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Copper	Adult			S		70-140 microgram/deciliter	11-22 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Copper	Adult			U		3-35 microgram/24 hr	0.047-0.55micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Coproporphyrins, types I and III	Adult			U		100-300 microgram/24 hr	150-460micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cortisol	Adult	Immunoassay	Fasting, 8am - noon	S	N	5 to 25 ug/dL	138 to 690 nmol/L		Human	No
Cortisol	Adult	Immunoassay	Noon - 8 pm	S	N	5 to 15 ug/dL	138 to 414 nmol/L		Human	No
Cortisol	Adult	Immunoassay	8 pm - 8 am	S	N	0 to 10 ug/dL	0 to 276 nmol/L		Human	No
Cortisol	Adult	Immunoassay	Free	U	N	20 to 70 ug/24 hrs	55 to 193 nmol/24 hrs		Human	No
Cortisol	Adult		Fasting, 8 a.m.-noon	S		5-25 microgram/deciliter	138-690 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cortisol	Adult		Noon-8 p.m.			5-15 microgram/deciliter	138-414 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cortisol	Adult		8 p.m.-8 a.m.			0-10 microgram/deciliter	0-276 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cortisol (Free)	Adult			U		20-70 microgram/24 hr	55-193 nmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
C-Peptide	Adult	Immunoassay		S, P	N	0.5 to 2 ng/mL	0.17 to 0.66 nmol/L		Human	No
C-Peptide	Adult			S		0.5-2.0 ng/ml	0.17-0.66 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
C-Reactive Protein	Adult	Nephelometry		S	N	0 to 12 mg/L	0 to 12 mg/L		Human	No
C-Reactive Protein	Adult		Routine	S		0.08-3.10 mg/liter	0.08-3.10 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
C-Reactive Protein	Adult		High-sensitivity	S		0.02-8.00 mg/liter	0.02-8.00 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Creatine Kinase	Adult	Immunoassay	MB fraction	S	N	0 to 5 ng/mL	0 to 5 ug/L		Human	No	CK, CPK
Creatine Kinase	Adult	Kinetic Method	Female	S	N	40 to 150 U/L	0.67 to 2.5 ukat/L		Human	No	CK, CPK
Creatine Kinase	Adult	Kinetic Method	Male	S	N	60 to 400 U/L	1 to 6.67 ukat/L		Human	No	CK, CPK
Creatine Kinase	Adult		Isoenzyme Index	S	N	0 to 2.5 % relative index	none		Human	No	CK, CPK
Creatine Kinase (MB isoenzyme)	Adult			S		0-7 ng/ml	0-7 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Creatine Kinase (Relative index)	Adult			S		Method-dependent	Method-dependent	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Creatine Kinase (Total)	Adult		Total - Female	S		40-150 U/liter	0.67-2.50microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	CK, CPK
Creatine Kinase (Total)	Adult		Total - Male	S		60-400 U/liter	1.00-6.67microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	CK, CPK
Creatine, as creatinine	Adult		Female	U		<100 mg/24 hr	<760 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Creatine, as creatinine	Adult		Male	U		<50 mg/24 hr	<380 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Creatinine	Adult	Colorimetry		P	N	0.6 to 1.5 mg/dL	53 to 133 umol/L		Human	No	Creat
Creatinine	Adult	Colorimetry		U	N	15 to 25 mg/kg/day	0.13 to 0.22 mmol/kg/day		Human	No	Creat
Creatinine	Adult			U		1.0-1.6 g/24 hr	8.8-14 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Creat
Creatinine	Adult			S		<1.5 mg/dl	<133 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cryofibrinogen	Adult			P		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cryoproteins	Adult			S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cyclosporine	Adult				Rx	Varies with time after Varies with time after dose and type of trans- dose and type of trans- plantation, with ranges plantation, with ranges of 100-400 ng/ml of 83-333 nmol/liter		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Cyclosporine	Adult				Tox	Varies with time after Varies with time after dose and type of trans- dose and type of trans- plantation, with ranges plantation, with ranges of 100-400 ng/ml of 83-333 nmol/liter	Varies with time after Varies with time after dose and type of trans- dose and type of trans- plantation plantation	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
d-Dimer	Adult	Latex Agglutination		P	N	<0.5 ug/mL	<0.5 mg/L		Human	No
d-Dimer	Adult			P		<0.5 microgram/ml	<0.5 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Dehydroepiandrosterone	Adult	Immunoassay	Female	S	N	130 to 980 ng/dL	4.5 to 34 nmol/L		Human	No	DHEA
Dehydroepiandrosterone	Adult	Immunoassay	Male	S	N	180 to 1250 ng/dL	6.24 to 43.3 nmol/L		Human	No	DHEA
Dehydroepiandrosterone	Adult		Male	S		180-1250 ng/dl	6.24-41.6 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DHEA
Dehydroepiandrosterone	Adult		Female			130-980 ng/dl	4.5-34.0 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DHEA
Dehydroepiandrosterone Sulfate	Adult		Male	S		10-619 microgram/deciliter	100-6190 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DHEA
Dehydroepiandrosterone Sulfate	Adult		Female (premenopausal)	S		12-535 microgram/deciliter	120-5350 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DHEA
Dehydroepiandrosterone Sulfate	Adult		Female (postmenopausal)	S		30-260 microgram/deciliter	300-2600 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DHEA
Dehydroepiandrosterone Sulfate	Adult	Immunoassay	Female Premenopausal	S	N	12 to 535 ug/dL	120 to 5350 ug/L		Human	No	DHEA-SO4
Dehydroepiandrosterone Sulfate	Adult	Immunoassay	Female Postmenopausal	S	N	30 to 260 ug/dL	300 to 2600 ug/L		Human	No	DHEA-SO4
Dehydroepiandrosterone Sulfate	Adult	Immunoassay	Male	S	N	10 to 619 ug/dL	100 to 6190 ug/L		Human	No	DHEA-SO4
Deoxycorticosterone	Adult	Immunoassay		S	N	2 to 19 ng/dL	61 to 576 nmol/L		Human	No	DOC
Deoxycorticosterone	Adult			S		2-19 ng/dl	61-576 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	DOC
Desipramine	Adult	Liquid Chromatography		S	Rx	150 to 300 ug/L	563 to 1125 nmol/L		Human	No
Desipramine	Adult				Rx	75-300 ng/ml	281-1125 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Desipramine	Adult				Tox	>400 ng/ml	>1500 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Diazepam	Adult	Liquid Chromatography		S	Rx	100 to 1000 ug/L	0.35 to 3.5 umol/L		Human	No
Diazepam	Adult				Rx	100-1000 ng/ml	0.35-3.51 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Diazepam	Adult				Tox	>5000 ng/ml	>17.55 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Differential Blood Count	Adult	Automated or Manual	Neutrophils	WB	N	45 to 75 %	0.45 to 0.75		Human	No	Diff
Differential Blood Count	Adult	Automated or Manual	Bands	WB	N	0 to 5 %	0 to 0.05		Human	No	Diff
Differential Blood Count	Adult	Automated or Manual	Lymphocytes	WB	N	16 to 46 %	0.16 to 0.46		Human	No	Diff
Differential Blood Count	Adult	Automated or Manual	Monocytes	WB	N	4 to 11 %	0.04 to 0.11		Human	No	Diff
Differential Blood Count	Adult	Automated or Manual	Eosinophils	WB	N	0 to 8 %	0 to 0.08		Human	No	Diff
Differential Blood Count	Adult	Automated or Manual	Basophils	WB	N	0 to 3 %	0 to 0.03		Human	No	Diff
Differential Blood Count	Adult		Neutrophils	WB		40-70%	0.40-0.70	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Differential Blood Count	Adult		Band forms	WB		0-10%	0-0.10	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Differential Blood Count	Adult		Lymphocytes	WB		22-44%	0.22-0.44	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Differential Blood Count	Adult		Monocytes	WB		4-11%	0.04-0.11	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Differential Blood Count	Adult		Eosinophils	WB		0-8%	0-0.08	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Differential Blood Count	Adult		Basophils	WB		0-3%	0-0.03	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Diff
Digoxin	Adult	Immunoassay		S	Rx	0.9 to 2 ng/mL	1.2 to 2.6 nmol/L		Human	No	Dig, Lanoxin
Digoxin	Adult				Rx	0.8-2.0 ng/ml	1.0-2.6 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Dig, Lanoxin
Digoxin	Adult				Tox	>2.5 ng/ml	>3.2 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Dig, Lanoxin
Dopamine	Adult			P		<87 pg/ml	<475 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Dopamine	Adult			U		65-400 microgram/day	425-2610 nmol/day	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Doxepin	Adult	Liquid Chromatography		S	Rx	150 to 250 ug/L	537 to 895 nmol/L		Human	No
Doxepin	Adult				Rx	30-150 ng/ml	107-537 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Doxepin	Adult				Tox	>500 ng/ml	>1790 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Eosinophil Count (Total)	Adult	Automated Cell Counter		WB	N	70 to 440 mm^3	70 to 440x10^6/L		Human	No	EO
Eosinophils	Adult			U		<100 eosinophils/ml	<100 eosinophils/ml	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Epinephrine	Adult		Supine (30 min)	P		<50 pg/ml	<273 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Epinephrine	Adult		Sitting	P		<60 pg/ml	<328 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Epinephrine	Adult		Standing (30 min)	P		<900 pg/ml	<4914 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Epinephrine	Adult		Standing (30 min)	U		0-20 microgram/day	0-109 nmol/day	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Erythrocyte Count	Adult	Automated Cell Counter	Female	WB	N	4.1 to 5.1x10^6/mm3	4.1 to 5.1x10^12/L		Human	No	RBC
Erythrocyte Count	Adult	Automated Cell Counter	Male	WB	N	4.5 to 5.3x10^6/mm3	4.5 to 5.3x10^12/L		Human	No	RBC
Erythrocyte Count	Adult		Male	WB		4.50-5.90x10^6/mm^3	4.50-5.90x10^12/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	RBC
Erythrocyte Count	Adult		Female	WB		4.00-5.20x10^6/mm^3	4.00-5.20x10^12/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	RBC
Erythrocyte Lifespan	Adult		Normal survival	WB		120 days	120 days	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Erythrocyte Lifespan	Adult		Chromium labeled, half-life	WB		25-35 days	25-35 days	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Erythrocyte Sedimentation Rate	Adult	Automated ESR	Female	WB	N	1 to 25 mm/hr	1 to 25 mm/hr		Human	No	ESR
Erythrocyte Sedimentation Rate	Adult	Automated ESR	Male	WB	N	0 to 17 mm/hr	0 to 17 mm/hr		Human	No	ESR
Erythrocyte Sedimentation Rate	Adult		Female	WB		1-25 mm/hr	1-25 mm/hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	ESR
Erythrocyte Sedimentation Rate	Adult		Male	WB		0-17 mm/hr	0-17 mm/hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	ESR
Erythropoietin	Adult			S		5-36 IU/liter	5-36 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estradiol	Adult	Immunoassay	Female Follicular Phase	S,P	N	50 to 145 pg/mL	184 to 532 pmol/L		Human	No
Estradiol	Adult	Immunoassay	Female Mid-cycle Peak	S,P	N	112 to 443 pg/mL	411 to 1626 pmol/L		Human	No
Estradiol	Adult	Immunoassay	Female Luteal phase	S,P	N	50 to 241 pg/mL	184 to 885 pmol/L		Human	No
Estradiol	Adult	Immunoassay	Female Postmenopausal	S,P	N	<59 pg/mL	<217 pmol/L		Human	No
Estradiol	Adult	Immunoassay	Male	S,P	N	<50 pg/mL	<184 pmol/L		Human	No
Estradiol	Adult		Menstruating - Follicular phase	S, P		<20-145 pg/ml	184-532 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estradiol	Adult		Menstruating - Midcycle peak	S, P		112-443 pg/ml	411-1626 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estradiol	Adult		Menstruating - Luteal phase	S, P		<20-241 pg/ml	184-885 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estradiol	Adult		Postmenopausal	S, P		<59 pg/ml	217 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estradiol	Adult		Male	S, P		<20 pg/ml	184 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estrone	Adult		Menstruating - Follicular phase	S, P		1.5-15.0 pg/ml	55-555 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estrone	Adult		Menstruating - Luteal phase	S, P		1.5-20.0 pg/ml	55-740 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estrone	Adult		Postmenopausal	S, P		1.5-5.5 pg/ml	55-204 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Estrone	Adult		Male	S, P		1.5-6.5 pg/ml	55-240 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ethanol	Adult	Gas Chromatography	Clinical Intoxication	S	H	>1000 mg/L	>1.0 g/L		Human	No	Ethyl alcohol, ETOH
Ethanol	Adult				Tox	>300 mg/dl	>65 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Ethyl alcohol, ETOH
Ethanol	Adult		Behavioral changes		Tox	>20 mg/dl	>4.3 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Ethyl alcohol, ETOH
Ethanol	Adult		Clinical intoxication		Tox	>100 mg/dl	>1 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Ethyl alcohol, ETOH
Ethosuximide	Adult				Rx	40-100 microgram/ml	283-708 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ethosuximide	Adult				Tox	>150 microgram/ml	>1062 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor II	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No	Prothrombin
Factor II, Prothrombin	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor IX	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor IX	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor V	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor V	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor VII	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor VII	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor VIII	Adult	Automated Clotting Assay		P	N	50 to 200 %	0.5 to 2		Human	No
Factor VIII	Adult			P		50-200%	0.50-2.00	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor X	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor X	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor XI	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor XI	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor XII	Adult	Automated Clotting Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Factor XII	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor XIII screen	Adult			P		No deficiency detected	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Factor-Inhibitor Assay	Adult	Automated Clotting Assay		P	N	<0.5 Bethesda unit	<0.5 Bethesda unit		Human	No
Factor-Inhibitor Assay	Adult			P		<0.5 Bethesda unit	<0.5 Bethesda unit	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Fatty acids, free (nonesterified)	Adult			P		<8-25 mg/dl	0.28-0.89 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ferritin	Adult	Immunoassay	Female	S	N	10 to 200 ng/mL	10 to 200 ug/L		Human	No
Ferritin	Adult	Immunoassay	Male	S	N	30 to 300 ng/mL	30 to 300 ug/L		Human	No
Ferritin	Adult		Female	S		30-300 ng/ml	30-300 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ferritin	Adult		Female	S		10-200 ng/ml	10-200 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Fibrin and Fibrinogen-Degradation Products	Adult	Latex Agglutination		P	N	<2.5 ug/mL	<2.5 mg/L		Human	No	FDP
Fibrin and Fibrinogen-Degradation Products	Adult			P		<2.5 microgram/ml	<2.5 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FDP
Fibrinogen	Adult	Automated Clotting Assay		P	N	175 to 400 mg/dL	1.75 to 4 umol/L		Human	No	Fib
Fibrinogen	Adult			P		150-400 mg/dl	1.50-4.00 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Fib
Flecainide	Adult				Rx	0.2-1.0 microgram/ml	0.5-2.4 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Flecainide	Adult				Tox	>1.0 microgram/ml	>2.4 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Fluoxetine	Adult	Liquid Chromatography	Fluoxetine	S	Rx	50 to 450 ug/L	162 to 1454 nmol/L		Human	No
Fluoxetine	Adult	Liquid Chromatography	Norfluoxetine	S	Rx	50 to 450 ug/L	169 to 1521 nmol/L		Human	No
Fluvoxamine	Adult	Liquid Chromatography		S	Rx	12 to 240 ug/L	38 to 756 nmol/L		Human	No
Folate (Folic Acid)	Adult	Immunoassay	Normal	S, P	N	3.1 to 17.5 ng/mL	7 to 39.7 nmol/L		Human	No
Folate (Folic Acid)	Adult	Immunoassay	Borderline Deficient	S, P	BDef	2.2 to 3 ng/mL	5 to 6.8 nmol/L		Human	No
Folate (Folic Acid)	Adult	Immunoassay	Deficient	S, P	Def	<2.2 ng/mL	<5.0 nmol/L		Human	No
Folate (Folic Acid)	Adult	Immunoassay	Excessive	S, P	EX	>17.5 ng/mL	>39.7 nmol/L		Human	No
Folate (Folic Acid)	Adult		Normal	S, P		3.1-17.5 ng/ml	7.0-39.7 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Folate (Folic Acid)	Adult		Borderline deficient	S, P		2.2-3.0 ng/ml	5.0-6.8 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Folate (Folic Acid)	Adult		Deficient	S, P		<2.2 ng/ml	<5.0 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Folate (Folic Acid)	Adult		Excess	S, P		>17.5 ng/ml	>39.7 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Folate (Folic Acid)	Adult			RC		150-450 ng/ml/cells	340-1020 nmol/liter/cells	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Follicle-Stimulating Hormone	Adult	Immunoassay	Female Follicular Phase	S, P	N	3 to 20 U/L	3 to 20 U/L		Human	No	FSH
Follicle-Stimulating Hormone	Adult	Immunoassay	Female Ovulatory Phase	S, P	N	9 to 26 U/L	9 to 26 U/L		Human	No	FSH
Follicle-Stimulating Hormone	Adult	Immunoassay	Female Luteal Phase	S, P	N	1 to 12 U/L	1 to 12 U/L		Human	No	FSH
Follicle-Stimulating Hormone	Adult	Immunoassay	Female Postmenopausal	S, P	N	18 to 153 U/L	18 to 153 U/L		Human	No	FSH
Follicle-Stimulating Hormone	Adult	Immunoassay	Male	S, P	N	1 to 12 U/L	1 to 12 U/L		Human	No	FSH
Follicle-Stimulating Hormone	Adult		Menstruating - Follicular phase	S, P		3.0-20.0 mIU/ml	3.0-20.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FSH
Follicle-Stimulating Hormone	Adult		Menstruating - Ovulatory phase	S, P		9.0-26.0 mIU/ml	9.0-26.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FSH
Follicle-Stimulating Hormone	Adult		Menstruating - Luteal phase	S, P		1.0-12.0 mIU/ml	1.0-12.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FSH
Follicle-Stimulating Hormone	Adult		Postmenopausal	S, P		18.0-153.0 mIU/ml	18.0-153.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FSH
Follicle-Stimulating Hormone	Adult		Male	S, P		1.0-12.0 mIU/ml	1.0-12.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	FSH
Free Fatty Acids	Adult	Spectrophotometry		S	N	0.17 to 0.95 mmol/L	0.17 to 0.95 mmol/L		Human	No
Fructosamine	Adult			S		1.61-2.68 mmol/liter	1.61-2.68 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Gamma-Glutamyltransferase	Adult	Spectrophotometry	Female	S	N	1 to 70 U/L	1 to 70 U/L		Human	No	GGT
Gamma-Glutamyltransferase	Adult	Spectrophotometry	Male	S	N	1 to 94 U/L	1 to 94 U/L		Human	No	GGT
Gamma-Glutamyltransferase	Adult			S		1-94 U/liter	1-94 U/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	GGT
Gastrin	Adult	Immunoassay		S	N	<100 ng/L	<100 ng/L		Human	No
Gastrin	Adult			S		<100 pg/ml	<100 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Gentamicin	Adult	Immunoassay	Trough	S	Rx	<2.1 ug/mL	<4.4 umol/L		Human	No	Gent
Gentamicin	Adult	Immunoassay	Peak	S	Rx	4 to 8 ug/mL	8.4 to 16.7 umol/L		Human	No	Gent
Gentamicin	Adult		Peak		Rx	8-10 microgram/ml	16.7-20.9 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Gent
Gentamicin	Adult		Trough		Rx	<2-4 microgram/ml	<4.2-8.4 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Gent
Gentamicin	Adult		Peak		Tox	>10 microgram/ml >21.0 micromoles/litre		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Gent
Gentamicin	Adult		Trough		Tox	>4 microgram/ml >8.4 micromoles/litre		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Gent
Globulin	Adult	Calculation		S	N	2.6 to 4.1 g/dL	26 to 41 g/L		Human	No
Glucagon	Adult	Immunoassay		P	N	20 to 100 pg/mL	20 to 100 ng/L		Human	No
Glucagon	Adult			P		20-100 pg/ml	20-100 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Glucose	Adult	Enzymatic Analysis	Fasting	P	N	70 to 110 mg/dL	3.9 to 6.1 mmol/L		Human	No	Dextrose
Glucose	Adult	Enzymatic Analysis		U	N	<0.05 g/dL	<0.003 mmol/L		Human	No	Dextrose
Glucose	Adult	Enzymatic Analysis		CSF	N	50 to 75 mg/dL	2.8 to 4.2 mmol/L		Human	No	Dextrose
Glucose	Adult		Fasting - Normal	P		75-115 mg/dl	4.2-6.4 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Glucose	Adult		Fasting - Diabetes mellitus	P		>125 mg/dl	>7.0 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Glucose	Adult		2 Hr postprandial	P		120 mg/dl	<6.7 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Glucose, true (oxidase method)	Adult			U		50-300 mg/24 hr	0.3-1.7 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Glucose-6-phosphate dehydrogenase, erythrocyte	Adult			WB		No gross deficiency	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Growth Hormone	Adult		Resting	S		0.5-17.0 ng/ml	0.5-17.0 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Growth Hormone	Adult	Immunoassay	Resting	S	N	2 to 5 ng/mL	2 to 5 ug/L		Human	No
Ham's test (acidified serum test)	Adult			WB		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Haptoglobin	Adult	Nephelometry		S	N	16 to 199 mg/dL	0.16 to 1.99 g/L		Human	No
Haptoglobin	Adult			S		16-199 mg/dl	0.16-1.99 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hematocrit	Adult	Automated Cell Counter	Female	WB	N	36 to 46 %	0.36 to 0.46		Human	No
Hematocrit	Adult	Automated Cell Counter	Male	WB	N	37 to 49 %	0.37 to 0.49		Human	No
Hematocrit	Adult		Male	WB		41.0-53.0%	0.41-0.53	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hematocrit	Adult		Female	WB		36.0-46.0%	0.36-0.46	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin	Adult	Automated Cell Counter	Female	WB	N	12 to 16 g/dL	7.4 to 9.9 mmol/L		Human	No	Hgb
Hemoglobin	Adult	Automated Cell Counter	Male	WB	N	13 to 18 g/dL	8.1 to 11.2 mmol/L		Human	No	Hgb
Hemoglobin	Adult		Plasma	P		1-5 mg/dl	0.01-0.05 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Hgb
Hemoglobin Electrophoresis	Adult		Hemoglobin A	WB		95-98%	0.95-0.98	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin Electrophoresis	Adult		Hemoglobin A2	WB		1.5-3.5%	0.015-0.035	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin Electrophoresis	Adult		Hemoglobin F	WB		0-2.0%	0-0.02	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin Electrophoresis	Adult		Hemoglobins other than A, A2, or F	WB		Absent	Absent	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin - Whole blood	Adult		Male	WB		13.5-17.5 g/dl	8.4-10.9 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin - Whole blood	Adult		Female	WB		12.0-16.0 g/dl	7.4-9.9 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Hemoglobin A1c	Adult	Liquid Chromatography		WB	N	3.8 to 6.4 %	0.038 to 0.064		Human	No	HgbA1c
Hemoglobin A1c	Adult			WB		3.8-6.4%	0.038-0.064 hemoglobin fraction	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	HgbA1c
Hemoglobins	Adult	Spectrophotometry	A2	WB	N	<3.5 %	<0.04		Human	No
Hemoglobins	Adult	Spectrophotometry	F	WB	N	<0.02 %	<0.0002		Human	No
Heparin-Induced Thrombocytopenia Antibody	Adult			P		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
High Density Lipoprotein Cholesterol	Adult	Colorimetry	Major risk factor for CAD when decreased	S	Low	<35 mg/dL	<0.91 mmol/L		Human	No	HDL
High Density Lipoprotein Cholesterol	Adult	Colorimetry	Desirable	S	D	>35 mg/dL	>0.91 mmol/L		Human	No	HDL
Homocysteine	Adult			P		4-12 micromoles/litre	4-12 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Homocysteine	Adult			P		0-12 micromoles/litre	0-12 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Human Chorionic Gonadotropin	Adult		Non-Pregnant Women	S		<5 mIU/ml	<5 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	hCG
Human Chorionic Gonadotropin	Adult	Immunoassay	Non-pregnant women	S	N	<5 mIU/mL	<5 IU/L		Human	No	hCG
Hydroxyproline	Adult			U		0-1.3 mg/24 hr	0-10micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ibuprofen	Adult				Tox	100-700 microgram/ml 485-3395 micromoles/litre		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ibuprofen	Adult				Rx	10-50 microgram/ml	49-243 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Imipramine	Adult				Tox	>500 ng/ml >1784 nmol/liter		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Imipramine	Adult	Liquid Chromatography	Imipramine	S	Rx	150 to 250 ug/L	536 to 893 nmol/L		Human	No
Imipramine	Adult	Liquid Chromatography	Desimipramine	S	Rx	150 to 300 ug/L	563 to 1125 nmol/L		Human	No
Imipramine	Adult				Rx	125-250 ng/ml	446-893 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Immunofixation	Adult			S		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Immunoglobulin	Adult		IgA	S		60-309 mg/dl	0.60-3.09 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgA
Immunoglobulin	Adult		IgD	S		0-14 mg/dl	0-140 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgD
Immunoglobulin	Adult		IgE	S		10-179 IU/ml	24-430 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgE
Immunoglobulin	Adult		IgG	S		614-1295 mg/dl	6.14-12.95 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgG
Immunoglobulin	Adult		IgG1	S		270-1740 mg/dl	2.7-17.4 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgG1
Immunoglobulin	Adult		IgG2	S		30-630 mg/dl	0.3-6.3 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgG2
Immunoglobulin	Adult		IgG3	S		13-320 mg/dl	0.13-3.20 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgG3
Immunoglobulin	Adult		IgG4	S		11-620 mg/dl	0.11-6.20 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgG4
Immunoglobulin	Adult		IgM	S		53-334 mg/dl	0.53-3.34 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IgM
Immunoglobulin	Adult	Nephelometry	IgA	S	N	60 to 309 mg/dL	0.6 to 3.09 g/L		Human	No	IgA
Immunoglobulin	Adult	Immunoassay	IgE	S	N	10 to 179 IU/mL	24 to 430 ug/L		Human	No	IgE
Immunoglobulin	Adult	Nephelometry	IgG	S	N	614 to 1295 mg/dL	6.14 to 12.95 g/L		Human	No	IgG
Immunoglobulin	Adult	Nephelometry	IgM	S	N	53 to 334 mg/dL	0.53 to 3.34 g/L		Human	No	IgM
Insulin	Adult	Immunoassay		S, P	N	2 to 20 uU/mL	14.35 to 143.5 pmol/L		Human	No
Insulin	Adult			S, P		2-20 microunits/ml	14.35-143.50 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Iron	Adult	Colorimetry		S	N	30 to 160 ug/dL	5.4 to 28.7 umol/L		Human	No	Fe
Iron	Adult			S		50-150 microgram/deciliter	9-27 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Fe
Iron	Adult			S		30-160 microgram/deciliter	5.4-28.7 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Fe
Iron-Binding Capacity	Adult	Colorimetry		S	N	228 to 428 ug/dL	40.8 to 76.7 umol/L		Human	No	IBC
Iron-Binding Capacity	Adult			S		250-370 microgram/deciliter	45-66 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IBC
Iron-Binding Capacity	Adult			S		228-428 microgram/deciliter	40.8-76.7 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	IBC
Iron-Binding Capacity (Saturation)	Adult			S		20-45%	0.2-0.45	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Joint-fluid crystal	Adult			JF		Negative	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Joint-fluid mucin	Adult			JF		Only type I mucin present	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Ketone (Acetone)	Adult	Nirtoprusside		S, U	N	Negative	Negative		Human	No	Acetone
Ketone (Acetone)	Adult			S, U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lactate	Adult			P, venous		5-15 mg/dl	0.6-1.7 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lactate Dehydrogenase	Adult			S		100-190 U/liter	1.7-3.2microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LDH
Lactate Dehydrogenase	Adult	Kinetic Method		S	N	110 to 210 U/L	1.83 to 3.5 ukat/L		Human	No	LDH
Lactate Dehydrogenase Isoenzymes	Adult	Electrophoresis	LD1	S	N	16 to 29 %	0.16 to 0.29		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult	Electrophoresis	LD2	S	N	30 to 41 %	0.3 to 0.41		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult	Electrophoresis	LD3	S	N	15 to 24 %	0.15 to 0.24		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult	Electrophoresis	LD4	S	N	6 to 13 %	0.06 to 0.13		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult	Electrophoresis	LD5	S	N	5 to 29 %	0.05 to 0.29		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult	Kinetic Method	Total LDH (when isoenzymes determined)	S	N	90 to 250 U/L	1.5 to 4.17 ukat/L		Human	No	LD iso
Lactate Dehydrogenase Isoenzymes	Adult		Fraction 1 (of total)	S		14-26%	0.14-0.25	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LD iso
Lactate Dehydrogenase Isoenzymes	Adult		Fraction 2	S		29-39%	0.29-0.39	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LD iso
Lactate Dehydrogenase Isoenzymes	Adult		Fraction 3	S		20-26%	0.20-0.25	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LD iso
Lactate Dehydrogenase Isoenzymes	Adult		Fraction 4	S		8-16%	0.08-0.16	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LD iso
Lactate Dehydrogenase Isoenzymes	Adult		Fraction 5	S		6-16%	0.06-0.16	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LD iso
Lactic Acid	Adult	Enzymatic Analysis		P	N	0.5 to 2.2 mmol/L	0.5 to 2.2 mmol/L		Human	No
Lead (adult)	Adult			S		<10-20 microgram/deciliter	<0.5-1 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
LE-cell test	Adult			WB		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Leukocyte Count	Adult	Automated Cell Counter		WB	N	4.5-11.0x10^3/mm3	4.5-11x10^9/liter		Human	No	WBC
Leukocyte Count	Adult			WB		4.5-11.0x10^3/mm3	4.5-11x10^9/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	WBC
Lidocaine	Adult		Central nervous system or cardio- vascular depression		Tox	6-8 microgram/ml	26-34.2 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lidocaine	Adult		Seizures, obtundation, decreased cardiac output		Tox	>8 microgram/ml	>34.2 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lidocaine	Adult				Rx	1.5-6.0 microgram/ml	6.4-26 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lipase	Adult	Kinetic Method		S	N	3 to 19 U/dL	0.5 to 3.17 ukat/L		Human	No
Lipase	Adult			S		0-160 U/liter	0-2.66microkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Lipids, triglyceride	Adult		See Triglycerides					Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	See Triglycerides
Lipoprotein (a)	Adult	Nephelometry		S	N	0 to 30 mg/dL	0 to 300 mg/L		Human	No	Lpa
Lipoprotein (a)	Adult			S		0-30 mg/dl	0-300 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Lpa
Lithium	Adult	Ion-selective Electrode		S, P	TH	0.5 to 1.5 mmol/L	0.5 to 1.5 mmol/L		Human	No	Li, Eskalith
Lithium	Adult				Rx	0.6-1.2 mEq/liter	0.6-1.2 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Li, Eskalith
Lithium	Adult				Tox	>2 mEq/liter	>2 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Li, Eskalith
Low-density Lipoprotein Cholesterol	Adult	Calculation	Desirable	S	D	<130 mg/dL	<3.36 mmol/L		Human	No	LDL
Low-density Lipoprotein Cholesterol	Adult	Calculation	Borderline High Risk	S	BH	130 to 159 mg/dL	3.36 to 4.11 mmol/L		Human	No	LDL
Low-density Lipoprotein Cholesterol	Adult	Calculation	High risk	S	H	>160 mg/dL	>4.13 mmol/L		Human	No	LDL
Lutenizing Hormone	Adult		Menstruating - Follicular phase	S, P		2.0-15.0 mIU/ml	2.0-15.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LH
Lutenizing Hormone	Adult		Menstruating - Midcycle peak	S, P		22.0-105.0 mIU/ml	22.0-105.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LH
Lutenizing Hormone	Adult		Menstruating - Luteal phase	S, P		0.6-19.0 mIU/ml	0.6-19.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LH
Lutenizing Hormone	Adult		Postmenopausal	S, P		16.0-64.0 mIU/ml	16.0-64.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LH
Lutenizing Hormone	Adult		Male	S, P		2.0-12.0 mIU/ml	2.0-12.0 IU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	LH
Lutenizing Hormone	Adult	Immunoassay	Female Follicular Phase	S	N	2 to 15 U/L	2 to 15 U/L		Human	No	LH
Lutenizing Hormone	Adult	Immunoassay	Female Ovulatory Phase	S	N	22 to 105 U/L	22 to 105 U/L		Human	No	LH
Lutenizing Hormone	Adult	Immunoassay	Female Luteal Phase	S	N	0.6 to 19 U/L	0.6 to 19 U/L		Human	No	LH
Lutenizing Hormone	Adult	Immunoassay	Female Postmenopausal	S	N	16 to 64 U/L	16 to 64 U/L		Human	No	LH
Lutenizing Hormone	Adult	Immunoassay	Male	S	N	2 to 12 U/L	2 to 12 U/L		Human	No	LH
Magnesium	Adult	Colorimetry		S	N	1.4 to 2 meq/L	0.7 to 1 mmol/L		Human	No	Mg
Magnesium	Adult			S		1.8-3.0 mg/dl	0.8-1.2 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Mg
Mean Corpuscular Hemoglobin Concentration	Adult			WB		31.0-37.0 g/dl	310-370 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	MCHC
Mean Corpuscular Hemoglobin Concentration	Adult	Automated Cell Counter		WB	N	31 to 37 g/dL	310 to 370 g/L		Human	No	MCHC
Mean Corpuscular Hemoglobin	Adult	Automated Cell Counter		WB	N	25 to 35 pg/cell	25 to 35 pg/cell		Human	No	MCH
Mean Corpuscular Hemoglobin	Adult			WB		26.0-34.0 pg/cell	26.0-34.0 pg/cell	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	MCH
Mean Corpusuclar Volume	Adult			WB		80-100microm3	80-100 fl	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	MCV
Mean Corpusuclar Volume	Adult	Automated Cell Counter	Female	WB	N	78 to 102 microm^3	78 to 102 fl		Human	No	MCV
Mean Corpusuclar Volume	Adult	Automated Cell Counter	Male	WB	N	78 to 100 microm^3	78 to 100 fl		Human	No	MCV
Mean Platelet Volume	Adult	Automated Cell Counter		WB	N	6.4 to 11 microm^3	6.4 to 11 fl		Human	No	MPV
Mercury	Adult			WB		0.6-59 microgram/liter	3.0-294 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Mercury	Adult			U, 24 hr		<20 microgram/liter	<99.8 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Metanephrine	Adult			P		<0.5 nmol/liter	<0.5 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Metanephrine	Adult			U		0.05-1.20 microgram/mg creatinine	0.03-0.69 mmol/mol creatinine	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Metanephrines	Adult	Chromatography	Metanephrine	U	N	45 to 290 ug/24 hrs	245 to 1583 nmol/24 hrs		Human	No
Metanephrines	Adult	Chromatography	Normetanephrine	U	N	82 to 500 ug/24 hrs	448 to 2730 nmol/24 hrs		Human	No
Metanephrines	Adult	Chromatography	Total	U	N	120 to 700 ug/24 hrs	655 to 3821 nmol/24 hrs		Human	No
Methadone	Adult	Liquid Chromatography		S	Rx	50 to 800 ug/mL	0.16 to 2.58 umol/L		Human	No
Methadone	Adult				Rx	100-400 ng/ml	0.32-1.29 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Methadone	Adult				Tox	>2000 ng/ml	>6.46 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Methemoglobin	Adult	Co-oximetry		P	N	0.4 to 1.5 %	0.004 to 0.015		Human	No
Methemoglobin	Adult			WB		Less than or Equal to 1% of total hemoglobin		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Methotrexate	Adult	Immunoassay	24 hrs after high dose	S	Rx	<10 umol/L	<10 umol/L		Human	No
Methotrexate	Adult	Immunoassay	48 hrs after high dose	S	Rx	<1.0 umol/L	<1.0 umol/L		Human	No
Methotrexate	Adult	Immunoassay	72 hrs after high dose	S	Rx	<0.4 umol/L	<0.4 umol/L		Human	No
Methotrexate	Adult		1-2 wk after low dose		Tox	>9.1 ng/ml	>20 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Methotrexate	Adult		48 hr after high dose		Tox	>227 ng/ml	>0.5 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Methotrexate	Adult				Rx	Variable	Variable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Microalbumin	Adult		24-hr	U		<20 mg/liter or <31 mg/24 hr	<0.02 g/liter or <0.031 g/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Microalbumin	Adult	Nephelometry	Random Urine	U	N	<20 ug/mL	<20 mg/L		Human	No
Microalbumin	Adult		Spot, morning	U		<0.03 mg albumin/mg creatinine	<0.03 g albumin/g creatinine	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Microalbumin	Adult			U		0-2.0 mg/dl	0-0.02 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Morphine	Adult				Rx	10-80 ng/ml	35-280 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Morphine	Adult				Tox	>200 ng/ml	>700 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Myoglobin	Adult		Male	S			19-92 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Myoglobin	Adult		Female	S			12-76 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Nordiazepam	Adult	Liquid Chromatography		S	Rx	100 to 800 ug/L	0.37 to 2.95 umol/L		Human	No
Norepinephrine	Adult			U		15-80 microgram/24 hr	89-473 nmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Norepinephrine	Adult		Supine (30 min)	P		<110-410 pg/ml	650-2423 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Norepinephrine	Adult		Sitting	P		120-680 pg/ml	709-4019 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Norepinephrine	Adult		Standing (30 min)	P		125-700 pg/ml	739-4137 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Nortriptyline	Adult				Rx	50-170 ng/ml	190-646 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Nortriptyline	Adult				Tox	>500 ng/ml	>1.9 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Osmolality	Adult	Freezing-point depression		S, P	N	280 to 296 mOsm/kg of water	280 to 296 mmol/kg of water		Human	No
Osmolality	Adult			P		285-295 mOsm/kg serum water 300-900 mOsm/kg	285-295 mmol/kg serum water 300-900 mmol/kg	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Osmolality	Adult			U		285-295 mOsm/kg serum water 300-900 mOsm/kg	285-295 mmol/kg serum water 300-900 mmol/kg	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Osmotic Fragility of Erythrocytes	Adult			WB		No increased hemoly- sis as compared with normal control	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxalate	Adult			U		2-60 mg/24 hr	228-684 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen	Adult		Content, sea level	WB, arterial		17-21 vol%		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen	Adult		Content, sea level	WB, venous (arm)		10-16 vol%		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen	Adult		Saturation, sea level	WB, arterial		97%	0.97 mol/mol	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen	Adult		Saturation, sea level	WB, venous (arm)		60-85%	0.60-0.85 mol/mol	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen	Adult		Partial pressure (PO2)	WB		80-100 mm Hg	11-13 kPa	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Oxygen (Partial Pressure)	Adult	Oxygen electrode	Arterial	WB	N	80 to 100 mm Hg	10.7 to 13.3 kPa		Human	No	PaO2
Parathyroid hormone	Adult			S		10-60 pg/ml	10-60 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Parathyroid Hormone	Adult	Immunoassay		S	N	10 to 60 pg/mL	10 to 60 ng/L		Human	No	PTH
Parathyroid Hormone	Adult	Immunoassay	Related Protein	P	N	<1.3 pmol/L	<1.3 pmol/L		Human	No
Parathyroid Hormone	Adult		Related Peptide	S		<1.3 pmol/liter	<1.3 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Paroxetine	Adult	Liquid Chromatography		S	Rx	20 to 190 ug/L	61 to 576 nmol/L		Human	No
Partial-thromboplastin time, activated	Adult	Automated Clotting Assay		P	N	22.1 to 34.1 sec	22.1 to 34.1 sec		Human	No	aPTT, PTT
Partial-thromboplastin time, activated	Adult			P		22.1-35.1 sec	22.1-35.1 sec	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
pH	Adult	pH electrode	Arterial	WB	N	7.35 to 7.45 pH units	7.35 to 7.45 pH units		Human	No
pH	Adult			WB		7.38-7.44		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
pH	Adult			U		5.0-9.0	5.0-9.0	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Phenobarbital	Adult				Rx	10-40 microgram/ml	43-170 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Phenobarb, Luminal
Phenobarbital	Adult		Slowness, ataxia, nystagmus		Tox	35-80 microgram/ml	151-345 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Phenobarb, Luminal
Phenobarbital	Adult		Coma with reflexes		Tox	65-117 microgram/ml	280-504 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Phenobarb, Luminal
Phenobarbital	Adult		Coma without reflexes		Tox	>100 microgram/ml	>430 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Phenobarb, Luminal
Phenobarbital	Adult	Immunoassay		S	Rx	15 to 50 ug/mL	65 to 216 umol/L		Human	No	Phenobarb, Luminal
Phenytoin	Adult				Rx	10-20 microgram/ml	40-79 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Pheny, Dilantin
Phenytoin	Adult				Tox	>20 microgram/ml	>79 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Pheny, Dilantin
Phenytoin	Adult	Immunoassay		S	Rx	5 to 20 ug/mL	20 to 79 umol/L		Human	No	Pheny, Dilantin
Phosphate (Phosphorus)	Adult		Acid	S		0-5.5 U/liter	0.90 nkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Phosphate (Phosphorus)	Adult		Alkaline	S		30-120 U/liter	0.5-2.0 nkat/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Phosphate (Phosphorus)	Adult			U		400-1300 mg/24 hr (varies with intake)	12.9-42.0 mmol/24 hr (varies with intake)	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Phosphorus (Inorganic)	Adult	Spectrophotometry		S	N	2.6 to 4.5 mg/dL	0.84 to 1.45 mmol/L		Human	No	Phos
Phosphorus (Inorganic)	Adult	Spectrophotometry	Average/day	U	N	1 g/day	32 mmol/day		Human	No	Phos
Phosphorus (Inorganic)	Adult			S		3-4.5 mg/dl	1.0-1.4 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Phos
Plasminogen	Adult	Immunoassay	Antigen	P	N	8.4 to 14 mg/dL	84 to 140 mg/L		Human	No
Plasminogen	Adult	Chromogenic Assay	Functional	P	N	80 to 130 %	0.8 to 1.3 mg/L		Human	No
Plasminogen	Adult		Functional	P		80-130%	0.80-1.30	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Plasminogen	Adult		Antigenic	P		8.4-14.0 mg/dl	84-140 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Plasminogen Activator Inhibitor 1	Adult			P		4-43 ng/ml	4-43 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Platelet Aggregation	Adult			PRP		>65% aggregation in response to adenosine diphosphate, epinephrine, collagen, ristocetin, and arachidonic acid	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Platelet Count	Adult			WB		150-350x10^3/mm^3	150-350x10^9/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Plat
Platelet Count	Adult	Automated Cell Counter		WB	N	150 to 350x10^3/mm3	150 to 350x10^9/L		Human	No	Plat
Porphobilinogen	Adult			U		None	None	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Potassium	Adult			U		25-100 mEq/24 hr (varies with intake)	25-100 mmol/24 hr (varies with intake)	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	K
Potassium	Adult	Ion-selective Electrode		P	N	3.4 to 4.8 mmol/L	3.4 to 4.8 mmol/L		Human	No	K
Potassium	Adult	Ion-selective Electrode		S	N	3.5 to 5 mmol/L	3.5 to 5 mmol/L		Human	No	K
Potassium	Adult	Ion-selective Electrode		U	N	depends on mmol/L	depends on mmol/L		Human	No	K
Potassium	Adult			S		3.5-5.0 mEq/liter	3.5-5.0 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	K
Prealbumin	Adult	Nephelometry		S	N	19.5 to 35.8 mg/dL	195 to 358 mg/L		Human	No	Transthyretin
Prealbumin	Adult			S		19.5-35.8 mg/dl	195-358 mg/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Pregnanetriol	Adult			U		Age- and sex-dependent	Age- and sex-dependent	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prekallikrein Assay	Adult	Chromogenic Assay		P	N	60 to 140 %	0.6 to 1.4		Human	No
Prekallikrein Assay	Adult			P		60-140%	0.60-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prekallikrein Screen	Adult			P		Deficiency not detected	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Procainamide	Adult				Rx	4-10 microgram/ml	17-42 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Procainamide	Adult				Tox	>10-12 microgram/ml	>42-51 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Progesterone	Adult	Immunoassay	Female Follicular phase	S, P	N	<1 ng/mL	<3.18 nmol/L		Human	No
Progesterone	Adult	Immunoassay	Female Mid-luteal phase	S, P	N	3 to 20 ng/mL	9.54 to 63.6 nmol/L		Human	No
Progesterone	Adult	Immunoassay	Male	S, P	N	<1 ng/mL	<3.18 nmol/L		Human	No
Progesterone	Adult		Menstruating - Follicular	S, P		<0.2 ng/ml	<0.6 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Progesterone	Adult		Menstruating - Midluteal	S, P		3-20 ng/ml	9.54-63.6 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Progesterone	Adult		Male	S, P		<0.2-1.4 ng/ml	<0.60-4.45 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prolactin	Adult	Immunoassay	Female Premenopausal	S	N	0 to 20 ng/mL	0 to 20 ug/L		Human	No
Prolactin	Adult	Immunoassay	Female Postmenopausal	S	N	0 to 15 ng/mL	0 to 15 ug/L		Human	No
Prolactin	Adult	Immunoassay	Male	S	N	0 to 15 ng/mL	0 to 15 ug/L		Human	No
Prolactin	Adult		Female	S		0-20 ng/ml	0-20 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prolactin	Adult		Male	S		0-15 ng/ml	0-15 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prostate-Specific Antigen	Adult	Immunoassay	Female	S	N	<0.5 ng/mL	<0.5 ug/L		Human	No	PSA
Prostate-Specific Antigen	Adult	Immunoassay	Male <40y	S	N	0 to 2 ng/mL	0 to 2 ug/L		Human	No	PSA
Prostate-Specific Antigen	Adult	Immunoassay	Male >40y	S	N	0 to 4 ng/mL	0 to 4 ug/L		Human	No	PSA
Prostate-Specific Antigen	Adult		Female	S		<0.5 ng/ml	<0.5 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	PSA
Prostate-Specific Antigen	Adult		Male - Less than or Equal to 40 yr			0-2.0 ng/ml	0-2.0 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	PSA
Prostate-Specific Antigen	Adult		Male - >40 yr			0-4.0 ng/ml	0-4.0 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	PSA
Prostate-Specific Antigen	Adult		Prostate-specific antigen (PSA), free (men 45-75 yr with PSA values between 4 and 20 ng/ml)			>25% associated with benign prostatic hyperplasia	>0.25 associated with benign prostatic hyperplasia	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	PSA
Prostate-Specific Antigen (free/total)	Adult		Male 45-75y PSA: 4 - 20 n	S	N	>25 BPH %	>.25 BPH		Human	No	F/T PSA, F/T, F/T Ratio
Protein	Adult	Colorimetry	Total	S	N	6 to 8 g/dL	60 to 80 g/L		Human	No
Protein	Adult	Turbidometry		U	N	<165 mg/day	<0.165 g/day		Human	No
Protein	Adult	Turbidometry	Lumbar	CSF	N	15 to 45 mg/dL	0.15 to 0.45 g/L		Human	No
Protein	Adult	Turbidometry	Cisternal	CSF	N	15 to 25 mg/dL	0.15 to 0.25 g/L		Human	No
Protein	Adult	Turbidometry	Ventricular	CSF	N	5 to 15 mg/dL	0.05 to 0.15 g/L		Human	No
Protein	Adult		Alpha1			0.2-0.4 g/dl (4.2-7.2%)	2-4 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Alpha2			0.5-0.9 g/dl (6.8-12%)	5-9 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Beta			0.6-1.1 g/dl (9.3-15%)	6-11 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult			U		<150 mg/24 hr	<0.15 g/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Fractions	S				Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Total	S		5.5-8.0 g/dl	55-80 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Albumin			3.5-5.5 g/dl (50-60%)	35-55 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Gamma			0.7-1.7 g/dl (13-23%)	7-17 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein	Adult		Globulin			2.0-3.5 g/dl (40-50%)	20-35 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein C	Adult	Automated Clotting Assay	Functional	P	N	70 to 140 %	0.7 to 1.4		Human	No
Protein C	Adult	Immunoassay	Total antigen	P	N	70 to 140 %	0.7 to 1.4		Human	No
Protein C	Adult		Total antigen	P		70-140%	0.70-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein C	Adult		Functional	P		70-140%	0.70-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein S	Adult	Automated Clotting Assay	Functional	P	N	70 to 140 %	0.7 to 1.4		Human	No
Protein S	Adult	Immunoassay	Total antigen	P	N	70 to 140 %	0.7 to 1.4		Human	No
Protein S	Adult	Immunoassay	Free antigen	P	N	70 to 140 %	0.7 to 1.4		Human	No
Protein S	Adult		Total antigen	P		70-140%	0.70-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein S	Adult		Functional	P		70-140%	0.70-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protein S	Adult		Free antigen	P		70-140%	0.70-1.40	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Prothrombin time	Adult			P		11.1-13.1 sec	11.1-13.1 sec	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	PT
Prothrombin time	Adult	Automated Clotting Assay		P	N	11.2 to 13.2 sec	11.2 to 13.2 sec		Human	No	PT
Prothrombin-gene mutation G20210A	Adult			WB		Not present	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Protoporphyrin (free erythrocyte)	Adult			WB		16-36 microgram/deciliter red cells	0.28-0.64 micromoles/litre red cells	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Pyruvate	Adult			P, venous		0.5-1.5 mg/dl	60-170 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Quinidine	Adult				Rx	2-5 microgram/ml	6-15 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Quinidex, Quinora
Quinidine	Adult				Tox	>6 microgram/ml	>18 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Quinidex, Quinora
Quinidine	Adult	Liquid Chromatography		S	Rx	1.2 to 4 ug/mL	3.7 to 12.3 umol/L		Human	No	Quinidex, Quinora
Red Cell Distribution Width	Adult			WB		11.5-14.5%	0.115-0.145	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Red Cell Distribution Width	Adult	Automated Cell Counter		WB	N	11.5 to 14.5 %	0.115 to 0.145		Human	No	RDW
Renin	Adult	Immunoassay	Supine - normal sodium diet	P	N	0.3 to 3 ng/mL/hr	0.08 to 0.83 ng/(L-sec)		Human	No	PRA
Renin	Adult	Immunoassay	Upright - normal sodium diet	P	N	1 to 9 ng/mL/hr	0.28 to 2.5 ng/(L-sec)		Human	No	PRA
Reptilase time	Adult	Automated Clotting Assay		P	N	16 to 24 sec	16 to 24 sec		Human	No
Reptilase time	Adult			P		16-24 sec	16-24 sec	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Reticulocyte Count	Adult			WB		0.5-2.5% red cells	0.005-0.025 red cells	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Retic
Reticulocyte Count	Adult	Flow cytometry		WB	N	0.5 to 2.5 % red cells	0.005 to 0.025 red cells		Human	No	Retic
Reticulocyte hemoglobin content	Adult			WB		>26 pg/cell	>26 pg/cell	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Rheumatoid factor	Adult			S, JF		<30.0 IU/ml	<30 kIU/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	RF
Rheumatoid factor	Adult	Nephelometry		S, JF	N	<30 IU/mL	<30 kIU/L		Human	No	RF
Ristocetin Cofactor	Adult	Platelet Aggregometry	Blood Group O	P	N	75 % mean of normal	0.75 mean of normal		Human	No	fuctional von Willebrand factor
Ristocetin Cofactor	Adult	Platelet Aggregometry	Blood Group A	P	N	105 % mean of normal	1.05 mean of normal		Human	No	fuctional von Willebrand factor
Ristocetin Cofactor	Adult	Platelet Aggregometry	Blood Group B	P	N	115 % mean of normal	1.15 mean of normal		Human	No	fuctional von Willebrand factor
Ristocetin Cofactor	Adult	Platelet Aggregometry	Blood Group AB	P	N	125 % mean of normal	1.25 mean of normal		Human	No	fuctional von Willebrand factor
Ristocetin Cofactor	Adult		Blood group O	P		75% mean of normal	0.75 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	fuctional von Willebrand factor
Ristocetin Cofactor	Adult		Blood group A	P		105% mean of normal	1.05 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	fuctional von Willebrand factor
Ristocetin Cofactor	Adult		Blood group B	P		115% mean of normal	1.15 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	fuctional von Willebrand factor
Ristocetin Cofactor	Adult		Blood group AB	P		125% mean of normal	1.25 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	fuctional von Willebrand factor
Salicylate	Adult		Toxic range	S	Tox	>500 mg/L	>3.62 mmol/L		Human	No
Salicylates	Adult				Rx	150-300 microgram/ml	1086-2172 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Salicylates	Adult				Tox	>300 microgram/ml	>2172 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Schilling Test	Adult		Orally administered vitamin B12 excreted in Urine	U		7-40%	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Hyaline casts	U		0-5/low-power field	0-5/low-power field	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Red cells	U		0-2/high-power field	0-2/high-power field	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		White cells	U		0-2/high-power field	0-2/high-power field	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Bacteria	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Bladder cells	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Broad casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Crystals	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Epithelial-cell casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Granular casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Red-cell casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Squamous cells	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Tubular cells	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		Waxy casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sediment	Adult		White-cell casts	U		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Serotonin	Adult	HPLC		WB	N	55 to 260 ng/mL	0.31 to 1.48 umol/L		Human	No
Serotonin	Adult			WB		50-200 ng/ml	0.28-1.14 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Serotonin	Adult			Platelets		125-500 ng/109 platelets	0.7-2.8 amol/platelet	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sertraline	Adult	Liquid Chromatography		S	N	40 to 160 ug/L	130 to 522 nmol/L		Human	No
Serum Protein Electrophoresis	Adult			S		Normal pattern	Not applicable	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sex Hormone Binding Globulin	Adult		Male	S		13-71 nmol/liter	13-71 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sex Hormone Binding Globulin	Adult		Female	S		18-114 nmol/liter	18-114 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sex Hormone Binding Globulin	Adult	Immunoassay	Female	S	N	8 to 85 mmol/L	8 to 85 mmol/L		Human	No
Sex Hormone Binding Globulin	Adult	Immunoassay	Male	S	N	6 to 44 mmol/L	6 to 44 mmol/L		Human	No
Sickle-cell test	Adult			WB		Negative	Negative	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sodium	Adult		Na	U		100-260 mEq/24 hr (varies with intake)	100-260 mmol/24 hr (varies with intake)	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Na
Sodium	Adult	Ion-selective Electrode		P	N	135 to 145 mmol/L	135 to 145 mmol/L		Human	No	Na
Sodium	Adult	Ion-selective Electrode		U	N	depends on mmol/L	depends on mmol/L		Human	No	Na
Sodium	Adult			S		136-145 mEq/liter	136-145 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Na
Somatomedin C	Adult		Insulin-like Growth Gactor I [IGF-I] / 16-24 yr	S		182-780 ng/ml	182-780 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Insulin-like growth factor 1
Somatomedin C	Adult		Insulin-like Growth Gactor I [IGF-I] / 25-39 yr	S		114-492 ng/ml	114-492 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Insulin-like growth factor 1
Somatomedin C	Adult		Insulin-like Growth Gactor I [IGF-I] / 40-54 yr	S		90-360 ng/ml	90-360 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Insulin-like growth factor 1
Somatomedin C	Adult		Insulin-like Growth Gactor I [IGF-I] / >54 yr	S		71-290 ng/ml	71-290 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Insulin-like growth factor 1
Somatomedin C	Adult	Immunoassay	16 - 24 years	S	N	182 to 780 ng/mL	182 to 780 ug/L		Human	No	Insulin-like growth factor 1
Somatomedin C	Adult	Immunoassay	25 - 39 years	S	N	114 to 492 ng/mL	114 to 492 ug/L		Human	No	Insulin-like growth factor 1
Somatomedin C	Adult	Immunoassay	40 - 54 years	S	N	90 to 360 ng/mL	90 to 360 ug/L		Human	No	Insulin-like growth factor 1
Somatomedin C	Adult	Immunoassay	> 54 years	S	N	71 to 290 ng/mL	71 to 290 ug/L		Human	No	Insulin-like growth factor 1
Somatostatin	Adult			P		<25 pg/ml	<25 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Specific gravity	Adult			U		1.001-1.035	1.001-1.035	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sucrose Hemolysis	Adult	Spectrophotometry		WB	N	<10 %	<0.1		Human	No
Sucrose Hemolysis	Adult			WB		<10%	<0.1	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Sulfamethoxazole	Adult	Liquid Chromatography		S	Rx	5 to 15 mg/dL	19.8 to 59.2 nmol/L		Human	No
Testosterone	Adult		Total, morning - Female	S		6-86 ng/dl	0.21-2.98 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Testosterone	Adult		Total, morning - Male	S		270-1070 ng/dl	9.36-37.10 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Testosterone	Adult		Unbound, morning - Female	S		0.2-3.1 pg/ml	6.9-107.5 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Testosterone	Adult		Unbound, morning - Male	S		12.0-40.0 pg/ml	416-1387 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Testosterone (Total)	Adult	Immunoassay	Female Morning sample	S	N	6 to 86 ng/dL	0.21 to 2.98 nmol/L		Human	No
Testosterone (Total)	Adult	Immunoassay	Male Morning sample	S	N	270 to 1070 ng/dL	9.36 to 37.1 nmol/L		Human	No
Testosterone, unbound	Adult	Immunoassay	Male 20-40y morning sample	S	N	15 to 40 pg/mL	520 to 1387 pmol/L		Human	No
Testosterone, unbound	Adult	Immunoassay	Male 41-60y morning sample	S	N	13 to 35 pg/mL	451 to 1213 pmol/L		Human	No
Testosterone, unbound	Adult	Immunoassay	Female 20-40y morning sample	S	N	0.6 to 3.1 pg/mL	20.8 to 107.5 pmol/L		Human	No
Testosterone, unbound	Adult	Immunoassay	Female 41-60y morning sample	S	N	0.4 to 2.5 pg/mL	13.9 to 86.7 pmol/L		Human	No
Theophylline	Adult				Rx	8-20 microgram/ml	44-111 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Theo, aminophylline
Theophylline	Adult				Tox	>20 microgram/ml >110 micromoles/litre		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Theo, aminophylline
Theophylline	Adult	Immunoassay		S	Rx	10 to 20 ug/mL	56 to 111 umol/L		Human	No	Theo, aminophylline
Theophylline	Adult	Immunoassay	Apnea control	S	Rx	5 to 15 ug/mL	28 to 83 umol/L		Human	No	Theo, aminophylline
Thiocyanate	Adult	Spectrophotometry	Toxic range	S	Tox	>100 mg/L	>1720 umol/L		Human	No
Thiocyanate	Adult		After nitroprusside infusion		Rx	6-29 microgram/ml	103-499 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thiocyanate	Adult		Nonsmoker		Rx	1-4 microgram/ml	17-69 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thiocyanate	Adult		Smoker		Rx	3-12 microgram/ml	52-206 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thiocyanate	Adult		After nitroprusside infusion		Tox	>120 microgram/ml	>2064 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thrombin time	Adult	Automated Clotting Assay		P	N	16 to 24 sec	16 to 24 sec		Human	No
Thrombin time	Adult			P		16-24 sec	16-24 sec	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thyroglobulin	Adult	Immunoassay		S	N	0 to 60 ng/mL	0 to 60 ug/L		Human	No
Thyroglobulin	Adult			S		0-60 ng/ml	0-60 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thyroid Hormone-Binding Index	Adult	Immunoassay		S	N	0.77 to 1.23	0.77 to 1.23		Human	No	THBI, T3RU
Thyroid-Binding Globulin	Adult			S		16-24 microgram/ml	206-309 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thyroid-Stimulating Hormone	Adult			S		0.5-4.7 microunits/ml	0.5-4.7 microunits/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	TSH
Thyroid-Stimulating Hormone	Adult	Immunoassay		S	N	0.5 to 5 uU/mL	0.5 to 5 uU/mL		Human	No	TSH
Thyroxine	Adult		Total (T4)	S		4.5-10.9 microgram/deciliter	58-140 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thyroxine	Adult		Free (fT4)	S		0.8-2.7 ng/dl	10.3-35.0 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Thyroxine (Total)	Adult	Immunoassay		S	N	4.5 to 10.9 ug/dL	58 to 140 nmol/L		Human	No	T4
Tobramycin	Adult		Peak		Rx	8-10 microgram/ml	17-21 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Tobra, Nebcin
Tobramycin	Adult		Trough		Rx	<4 microgram/ml	<9 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Tobra, Nebcin
Tobramycin	Adult		Peak		Tox	>10 microgram/ml	>21 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Tobra, Nebcin
Tobramycin	Adult		Trough		Tox	>4 microgram/ml	>9 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Tobra, Nebcin
Tobramycin	Adult	Immunoassay	Trough	S	Rx	<2.0 ug/mL	<4.3 umol/L		Human	No	Tobra, Nebcin
Tobramycin	Adult	Immunoassay	Peak	S	Rx	4 to 8 ug/mL	8.6 to 17.1 umol/L		Human	No	Tobra, Nebcin
Transferrin	Adult	Nephelometry		S	N	191 to 365 mg/dL	1.91 to 3.65 g/L		Human	No
Transferrin	Adult			S		230-390 mg/dl	2.3-3.9 g/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Transferrin receptor	Adult			S, P		9.6-29.6 nmol/liter	9.6-29.6 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Trazodone	Adult	Liquid Chromatography		S	Rx	800 to 1600 ug/L	2152 to 4304 nmol/L		Human	No
Triglycerides	Adult			S		<160 mg/dl	<1.8 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Triglycerides	Adult	Spectrophotometry	Fasting	S	N	40 to 150 mg/dL	0.45 to 1.69 mmol/L		Human	No	Trig
Triiodothyronine	Adult		Total (T3)	S		60-181 ng/dl	0.92-2.78 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Triiodothyronine	Adult		Free (fT3)	S		1.4-4.4 pg/ml	0.22-6.78 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Triiodothyronine (Total)	Adult	Immunoassay		S	N	60 to 181 ng/dL	0.92 to 2.78 nmol/L		Human	No	T3
Troponin	Adult		I	S		0-0.4 ng/ml	0-0.4 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Troponin	Adult		T	S		0-0.1 ng/ml	0-0.1 microgram/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Troponin I	Adult	Immunoassay	Normal	S	N	<0.6 ng/mL	<0.6 ug/L		Human	No
Troponin I	Adult	Immunoassay	Acute Myocardial Infarct	S	H	>1.5 ng/mL	>1.5 ug/L		Human	No
Urea Nitrogen	Adult	Conductivity		P	N	8 to 25 mg/dL	2.9 to 8.9 mmol/L		Human	No	BUN
Urea Nitrogen	Adult	Conductivity		U	N	6 to 17 g/day	6 to 17 g/day		Human	No	BUN
Urea Nitrogen	Adult			S		10-20 mg/dl	3.6-7.1 mmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	BUN
Urea Nitrogen	Adult			U		6-17 g/24 hr	214-607 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	BUN
Uric Acid	Adult		With Normal Diet	U		250-800 mg/24 hr	1.49-4.76 mmol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Uric Acid	Adult	Colorimetry	Female	S	N	2.3 to 6.6 mg/dL	137 to 393 umol/L		Human	No
Uric Acid	Adult	Colorimetry	Male	S	N	3.6 to 8.5 mg/dL	214 to 506 umol/L		Human	No
Uric Acid	Adult		Male	S		2.5-8.0 mg/dl	150-480 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Uric Acid	Adult		Female	S		1.5-6.0 mg/dl	90-360 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Urobilinogen	Adult			U		1-3.5 mg/24 hr	1.7-5.9micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Valproic Acid	Adult	Immunoassay		S	Rx	50 to 100 ug/mL	347 to 693 umol/L		Human	No	Depakane, Depakote
Valproic Acid	Adult				Tox	>150 microgram/ml >1040 micromoles/litre		Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Depakane, Depakote
Valproic Acid	Adult				Rx	50-150 microgram/ml	347-1040 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	Depakane, Depakote
Vancomycin	Adult	Immunoassay	Trough	S	Rx	<10.1 ug/mL	<7.0 umol/L		Human	No
Vancomycin	Adult	Immunoassay	Peak (2 hrs after infusion)	S	Rx	18 to 26 ug/mL	12 to 18 umol/L		Human	No
Vancomycin	Adult		Peak		Rx	18-26 microgram/ml	12-18 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vancomycin	Adult		Trough		Rx	5-10 microgram/ml	3-7 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vancomycin	Adult		Peak		Tox	>80-100 microgram/ml	>55-69 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vanillylmandelic Acid (VMA)	Adult			U		0.15-1.20 mg/24 hr	7.6-37.9micromol/24 hr	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vasoactive Intestinal Polypeptide	Adult	Immunoassay		P	N	<75 pg/mL	<75 ng/L		Human	No	VIP
Vasoactive Intestinal Polypeptide	Adult			P		<75 pg/ml	<75 ng/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	VIP
Viscosity	Adult			P		1.7-2.1	1.7-2.1	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Viscosity	Adult			S		1.4-1.8	1.4-1.8	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin A	Adult			S		20-100 microgram/deciliter	0.7-3.5 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin B1 (thiamine)	Adult			S		0-2 microgram/deciliter	0-75 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin B12	Adult	Immunoassay	Normal	S, P	N	>250 pg/mL	>184 pmol/L		Human	No	B12
Vitamin B12	Adult	Immunoassay	Borderline	S, P	BDef	125 to 250 pg/mL	92 to 184 pmol/L		Human	No	B12
Vitamin B12	Adult	Immunoassay	Deficient	S, P	Def	<125 pg/mL	<92 pmol/L		Human	No	B12
Vitamin B12	Adult		Normal	S, P		>250 pg/ml	>185 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	B12
Vitamin B12	Adult		Borderline	S, P		125-250 pg/ml	92-185 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	B12
Vitamin B12	Adult		Deficient	S, P		<125 pg/ml	<92 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	B12
Vitamin B2 (riboflavin)	Adult			S		4-24 microgram/deciliter	106-638 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin B6	Adult			P		5-30 ng/ml	20-121 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin C (ascorbic acid)	Adult			S		0.4-1.0 mg/dl	23-57 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin D3 (1,25-dihydroxyvitamin D)	Adult	Immunoassay		S	N	18 to 62 pg/mL	43.2 to 148.8 pmol/L		Human	No
Vitamin D3 (1,25-dihydroxyvitamin D)	Adult			S		25-45 pg/ml	60-108 pmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin D3 (25-hydroxyvitamin D)	Adult	Immunoassay		S	N	8 to 42 ng/mL	20 to 105 nmol/L		Human	No
Vitamin D3 (25-hydroxyvitamin D)	Adult			P		10-68 ng/ml	24.9-169.5 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin E	Adult			S		5-18 microgram/ml	12-42 micromoles/litre	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Vitamin K	Adult			S		0.13-1.19 ng/ml	0.29-2.64 nmol/liter	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
von Willebrand Factor Antigen	Adult		Blood group O	P		75% mean of normal	0.75 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult		Blood group A	P		105% mean of normal	1.05 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult		Blood group B	P		115% mean of normal	1.15 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult		Blood group AB	P		125% mean of normal	1.25 mean of normal	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult	Immunoassay	Blood Group O	P	N	75 % mean of normal	0.75 mean of normal		Human	No	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult	Immunoassay	Blood Group A	P	N	105 % mean of normal	1.05 mean of normal		Human	No	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult	Immunoassay	Blood Group B	P	N	115 % mean of normal	1.15 mean of normal		Human	No	vWF antigen, factor VIII:R antigen
von Willebrand Factor Antigen	Adult	Immunoassay	Blood Group AB	P	N	125 % mean of normal	1.25 mean of normal		Human	No	vWF antigen, factor VIII:R antigen
von Willebrand Factor Multimers	Adult			P		Normal distribution	Normal distribution	Kratz A; Lewandrowski KB - Case records of the Massachusetts General Hospital. Normal Reference Laboratory Values. N Engl J Med 2004; 351:1548-63.	Human	Yes
Xylose	Adult	Colorimetric		S	N	none detec	none detec		Human	No
Xylose	Adult	Colorimetric		U	N	4 to 9 g/5 hours	4 to 9 g/5 hours		Human	No

Reference Range Interval Table

Reference Range Interval Table

Reference Range / Interval Table

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