Blood, Plasma, Serum

Reference Range

Alanine aminotransferase (ALT), serum

8-40 U/L

Alkaline phosphatase, serum

Male

30-100 U/L

Female

45-115 U/L

Amylase, serum

25-125 U/L

Aspartate aminotransferase (AST), serum

8-40 U/L

Bilirubin, serum (adult)

   Total

0.1-1.0 mg/dL

   Direct

0.0-0.3 mg/dL

Calcium, serum (total)

8.4-10.2 mg/dL

Cholesterol, serum

   Total

150-240 mg/dL

   HDL

30-70 mg/dL

   LDL

<160 mg/dL

Cortisol, serum

0800 h

5-23 μg/dL

1600 h

3-15 μg/dL

2000 h

50% of 0800 h

Creatine kinase, serum

Male

25-90 U/L

Female

10-70 U/L

Creatinine, serum

0.6-1.2 mg/dL

Electrolytes, serum

Sodium (Na⁺)

136-145 mEq/L

Potassium (K⁺)

3.5-5.0 mEq/L

Chloride (Cl^–)

95-105 mEq/L

Bicarbonate (HCO₃^–)

22-28 mEq/L

Magnesium (Mg²⁺)

1.5-2.0 mEq/L

Estriol, total, serum (in pregnancy)

24-28 wks

30-170 ng/mL

28-32 wks

40-220 ng/mL

32-36 wks

60-280 ng/mL

36-40 wks

80-350 ng/mL

Ferritin, serum

Male

15-200 ng/mL

Female

12-150 ng/mL

Follicle-stimulating hormone, serum/plasma

Male

4-25 mIU/mL

Female

   premenopause

4-30 mIU/mL

   midcycle peak

10-90 mIU/mL

   postmenopause

40-250 mIU/mL

Gases, arterial blood (room air)

pH

7.35-7.45

Pco₂

33-45 mm Hg

Po₂

75-105 mm Hg

Glucose, serum

Fasting

70-110 mg/dL

2-h postprandial

<120 mg/dL

Growth hormone- arginine stimulation

Fasting

<5 ng/mL

Provocative stimuli

>7 ng/mL

Immunoglobulins, serum

IgA

76-390 mg/dL

IgE

0-380 IU/mL

IgG

650-1,500 mg/dL

IgM

40-345 mg/dL

Iron

50-170 μg/dL

Lactate dehydrogenase, serum

45-90 U/L (100-250 IU/L)

Luteinizing hormone, serum/plasma

Male

6-23 mIU/mL

Female

   follicular phase

5-30 mIU/mL

   midcycle

75-150 mIU/mL

   postmenopause

30-200 mIU/mL

Osmolality, serum

275-295 mOsmol/kg H₂O

Parathyroid hormone, serum, N-terminal

10-65 pg/mL

Phosphate (alkaline), serum (p-NPP at 30° C)

20-70 U/L

Phosphorus (inorganic), serum

3.0-4.5 mg/dL

Prolactin, serum (hPRL)

<20 ng/mL

Proteins, serum

   Total (recumbent)

6.0-7.8 g/dL

   Albumin

3.5-5.5 g/dL

   Globulin

2.3-3.5 g/dL

Thyroid-stimulating hormone (TSH), serum

0.5-5.0 μU/mL

Thyroidal iodine (¹²³I) uptake

8%-30% of administered dose/24 h

Thyroxine (T₄), serum

5-12 μg/dL

Triglycerides, serum

35-160 mg/dL

Triiodothyronine (T₃), serum (RIA)

115-190 ng/dL

Triiodothyronine (T₃) resin uptake

25%-35%

Urea nitrogen, serum (BUN)

7-18 mg/dL

Uric acid, serum

3.0-8.2 mg/dL

Hematologic

Reference Range

Bleeding time (template)

2-7 minutes

CD4+ T-lymphocyte count

>500 mm³

Erythrocyte count

Male

4.3-5.9 million/mm³

Female

3.5-5.5 million/mm³

Erythrocyte sedimentation rate (Westergren)

Male

0-15 mm/h

Female

0-20 mm/h

Hematocrit

Male

41%-53%

Female

36%-46%

Hemoglobin A_1c

≤6%

Hemoglobin, blood

Male

13.5-17.5 g/dL

Female

12.0-16.0 g/dL

Leukocyte count and differential

Leukocyte count

4,500-11,000/mm³

Neutrophils, segmented

54%-62%

Neutrophils, banded

3%-5%

Eosinophils

1%-3%

Basophils

0%-0.75%

Lymphocytes

25%-33%

Monocytes

3%-7%

Mean corpuscular hemoglobin (MCH)

25.4-34.6 pg/cell

Mean corpuscular hemoglobin concentration (MCHC)

31%-36% Hb/cell

Mean corpuscular volume (MCV)

80-100 μm³

Partial thromboplastin time (activated)

25-40 seconds

Platelet count

150,000-400,000/mm³

Prothrombin time

11-15 seconds

Reticulocyte count

0.5%-1.5% of red cells

Thrombin time

<2 seconds deviation from control

Volume

Plasma

   Male

25-43 mL/kg

   Female

28-45 mL/kg

Red cell

   Male

20-36 mL/kg

   Female

19-31 mL/kg

Cerebrospinal Fluid

Reference Range

Cell count

0-5/mm³

Chloride

118-132 mEq/L

Gamma globulin

3%-12% of total proteins

Glucose

40-70 mg/dL

Pressure

70-180 mm H₂O

Proteins, total

<40 mg/dL

Sweat

Reference Range

Chloride

0-35 mmol/L

Urine

Reference Range

Calcium

100-300 mg/24 h

Chloride

Varies with intake

Creatine clearance

Male

97-137 mL/min

Female

88-128 mL/min

Estriol, total (in pregnancy)

30 wks

6-18 mg/24 h

35 wks

9-28 mg/24 h

40 wks

13-42 mg/24 h

17-hydroxycorticosteroids

Male

3.0-10.0 mg/24 h

Female

2.0-8.0 mg/24 h

17-ketosteroids, total

Male

8-20 mg/24 h

Female

6-15 mg/24 h

Osmolality

50-1,400 mOsmol/kg H₂O

Oxalate

8-40 μg/mL

Proteins, total

<150 mg/24 h

Sodium, total

varies with diet

Uric acid

varies with diet

Body Mass Index (Adult)

19-25 kg/m²