Normal Lab Values
 

REFERENCE RANGE

SI REFERENCE INTERVALS

BLOOD, PLASMA, SERUM

Alanine aminotransferase (ALT)

8-20 U/L

8-20 U/L

Amylase, serum

25-125 U/L

25-125 U/L

Aspartate aminotransferase (AST)

8-20 U/L

8-20 U/L

Bilirubin, serum (adult) Total // Direct

0.1-1.0 mg/dL // 0.0-0.3 mg/dL

2-17 µ mol/L // 0-5 µ mol/L

Calcium, serum (Total)

8.4-10.2 mg/dL

2.1-2.8 mmol/L

Cholesterol, serum

< 200 mg/dL

< 5.2 mmol/L

Cortisol, serum

0800 h: 5-23 µ g/dL // 1600 h: 3-15 µ g/dL

138-635 nmol/L // 82-413 nmol/L

2000 h: ≤ 50% of 0800 h

Fraction of 0800 h: ≤ 0.50

Creatine kinase, serum (at 30 ° C) ambulatory

Male: 25-90 U/L

25-90 U/L

Female: 10-70 U/L

10-70 U/L

Creatinine, serum

0.6-1.2 mg/dL

53-106 µ mol/L

Electrolytes, serum

Sodium

135-145 mEq/L

136-145 mmol/L

Chloride

95-105 mEq/L

95-105 mmol/L

Potassium

3.5-5.0 mEq/L

3.5-5.0 mmol/L

Bicarbonate

22-28 mEq/L

22-28 mmol/L

Magnesium

1.5-2.0 mEq/L

1.5-2.0 mmol/L

Estriol (E3) total, serum (in pregnancy)

24-28 wks // 32-36 wks

30-170 ng/mL // 60-280 ng/mL

104-590 // 208-970 nmol/L

28-32 wks // 36-40 wks

40-220 ng/mL // 80-350 ng/mL

140-760 // 280-1210 nmol/L

Ferritin, serum

Male: 15-200 ng/mL

15-200 µ g/L

Female: 12-150 ng/mL

12-150 µ g/L

Follicle-stimulating hormone, serum/plasma

Male: 4-25 mIU/mL

4-25 U/L

Female: -- premenopause 4-30 mIU/mL

4-30 U/L

-- midcycle peak 10-90 mIU/mL

10-90 U/L

--postmenopause 40-250 mIU/mL

40-250 U/L

Gases, arterial blood (room air)

pH

7.35-7.45

[H + ] 36-44 nmol/L

PCO 2

33-45 mm Hg

4.4-5.9 kPa

PO 2

75-105 mm Hg

10.0-14.0 kPa

Glucose, serum

Fasting: 70-110 mg/dL

3.8-6.1 mmol / L

2-h postprandial: < 120 mg/dL

< 6.6 mmol/L

Growth hormone - arginine stimulation

Fasting: < 5 ng/mL

< 5 µ g/L

provocative stimuli: 7 ng/mL

> 7 µ g/L

Immunoglobulins, serum

IgA

76-390 mg/dL

0.76-3.90 g/L

IgE

0-380 IU/mL

0-380 kIU/mL

IgG

650-1500 mg/dL

6.5-15 g/L

IgM

40-345 mg/dL

0.4-3.45 g/L

Iron

50-170 µ g/dL

9-30 µ mol/L

Lactate dehydrogenase, serum

45-90 U/L

45-90 U/L

Luteinizing hormone, serum/plasma

Male: 6-23 mIU/mL

6-23 U/L

Female: --follicular phase 5-30 mIU/mL

5-30 U/L

--midcycle 75-150 mIU/mL

75-150 U/L

--postmenopause 30-200 mIU/mL

30-200 U/L

Osmolality, serum

275-295 mOsmol/kg

275-295 mOsmol/kg

Parathyroid hormone, serum, N-terminal

230-630 pg/mL

230-630 ng/L

Phosphatase (alkaline), serum

20-70 U/L

20-70 U/L

Phosphorus (inorganic), serum

3.0-4.5 mg/dL

1.0-1.5 mmol/L

Prolactin, serum (hPRL)

< 20 ng/mL

< 20 µ g/L

Proteins, serum

Total (recumbent)

6.0-7.8 g/dL

60-78 g/L

Albumin

3.5-5.5 g/dL

35-55 g/L

Globulins

2.3-3.5 g/dL

23-35 g/L

Thyroid-stimulating hormone, serum or plasma

0.5-5.0 µ U/mL

0.5-5.0 mU/L

Thyroidal iodine ( 123 I) uptake

8-30% of administered dose/24 h

0.08-0.30/24 h

Thyroxine (T 4 ), serum

5-12 µ g/dL

64-155 nmol/L

Triglycerides, serum

35-160 mg/dL

0.4-1.81 mmol/L

Triiodothyronine (T 3 ), serum (RIA)

115-190 ng/dL

1.8-2.9 nmol/L

Triiodothyronine (T 3 ) resin uptake

25-35%

0.25-0.35

Urea nitrogen, serum (BUN)

7-18 mg/dL

1.2-3.0 mmol urea/L

Uric acid, serum

3.0-8.2 mg/dL

0.18-0.48 mmol/L

CEREBROSPINAL FLUID

Cell count

0-5 cells/mm 3

0-5 x 10 6 /L

Chloride

118-132 mEq/L

118-132 mmol/L

Gamma globulin

3-12% total proteins

0.03-0.12

Glucose

40-70 mg/dL

2.2-3.9 mmol/L

Pressure

70-180 mm H 2 O

70-180 mm H 2 O

Proteins, total

< 40 mg/dL

< 0.40 g/L

HEMATOLOGIC

Bleeding time

2-7 minutes

2-7 minutes

Erythrocyte count

Male: 4.3-5.9 million/mm 3

4.3-5.9 x 10 12 /L

Female: 3.5-5.5 million/mm 3

3.5-5.5 x 10 12 /L

Erythrocyte sedimentation rate (Westergren)

Male: 0-15 mm/h

0-15 mm/h

Female: 0-20 mm/h

0-20 mm/h

Hematocrit

Male: 41-53%

0.41-0.53

Female: 36-46%

0.36-0.46

Hemoglobin A 1C

≤ 6%

≤ 0.06%

Hemoglobin, blood

Male: 13.5-17.5 g/dL

2.09-2.71 mmol/L

Female: 12.0-16.0 g/dL

1.86-2.48 mmol/L

Hemoglobin, plasma

1-4 mg/dL

0.16-0.62 µ mol/L

Leukocyte count and differential

Leukocyte count

4500-11,000/mm 3

4.5-11.0 x 10 9 /L

Segmented neutrophils

54-62%

0.54-0.62

Band forms

3-5%

0.03-0.05

Eosinophils

1-3%

0.01-0.03

Basophils

0-0.75%

0-0.0075

Lymphocytes

25-33%

0.25-0.33

Monocytes

3-7%

0.03-0.07

Mean corpuscular hemoglobin

25.4-34.6 pg/cell

0.39-0.54 fmol/cell

Mean corpuscular hemoglobin concentration

31-36% Hb/cell

4.81-5.58 mmol Hb/L

Mean corpuscular volume

.80-100 µ m 3

80-100 fl

Partial thromboplastin time (activated)

25-40 seconds

25-40 seconds

Platelet count

150,000-400,000/mm 3

150-400 x 10 9 /L

Prothrombin time

11-15 seconds

11-15 seconds

Reticulocyte count

0.5-1.5% of red cells

0.005-0.015

Thrombin time

< 2 seconds deviation from control

< 2 seconds deviation from control

Volume

Plasma

Male: 25-43 mL/kg

0.025-0.043 L/kg

Female: 28-45 mL/kg

0.028-0.045 L/kg

Red cell

Male: 20-36 mL/kg

0.020-0.036 L/kg

Female: 19-31 mL/kg

0.019-0.031 L/kg

SWEAT

Chloride

0-35 mmol/L

0-35 mmol/L

URINE

Calcium

100-300 mg/24 h

2.5-7.5 mmol/24 h

Chloride

Varies with intake

Varies with intake

Creatinine clearance

Male: 97-137 mL/min

Female: 88-128 mL/min

Estriol, total (in pregnancy)

30 wks

6-18 mg/24 h

21-62 µ mol/24 h

35 wks

9-28 mg/24 h

31-97 µ mol/24 h

40 wks

13-42 mg/24 h

45-146 µ mol/24 h

17-Hydroxycorticosteroids

Male: 3.0-10.0 mg/24 h

8.2-27.6 µ mol/24 h

Female: 2.0-8.0 mg/24 h

5.5-22.0 µ mol/24 h

17-Ketosteroids, total

Male: 8-20 mg/24 h

28-70 µ mol/24 h

Female: 6-15 mg/24 h

21-52 µ mol/24 h

Osmolality

50-1400 mOsmol/kg

Oxalate

8-40 µ g/mL

90-445 µ mol/L

Potassium

Varies with diet

Varies with diet

Proteins, total

< 150 mg/24 h

< 0.15 g/24 h

Sodium

Varies with diet

Varies with diet

Uric acid

Varies with diet

Varies with diet