Medical Laboratory Reference Ranges: Blood, Urine, and Biochemistry

WBC

5,000 - 10,000/mm3

RBC

female 4 - 5/million/uL; male 4.5 - 6/million/uL

Hemoglobin

female 12 - 16 g/dL; male 13.5 - 18 g/dL

Hematocrit

female 38 - 47%; male 40 - 54%

Platelets

150,000 - 450,000/mm3

Lymphocytes

20-40%

Monocytes

2-8%

Eosinophils

1-4%

Basophils

0.5-1%

Sodium (Na+)

135 - 145 mEq/L

Potassium (K+)

3.5 - 5.0 mEq/L

Chloride (Cl-)

98 - 106 mEq/L

CO2

23-30 mEq/L

BUN

10-20 mg/dL

Creatinine

Female: 0.5-1.1 mg/dL

Male: 0.6-1.2 mg/dL

Calcium (Ca++)

9.0-10.5 mg/dL

Glucose

70-110 mg/dL

Phosphorus

3.0-4.5 mg/dL

Magnesium (Mg++)

1.6-2.6 mEq/L

PT

10-15 seconds

aPTT

<35 seconds

INR

1-1.2

D-dimer

<4 mcg//L

pH (blood)

7.35-7.45

PaCO2

35-45 mmHg

HCO3

22-26 mEq/L

PaO2

80-100 mmHg

Arterial Lactate

3-7 mg/dL (0.3-0.8 mmol/L)

Venous Lactate

5-20 mg/dL (0.6-2.2 mmol/L)

Serum Osmolarity

285-295 mOsm/kg H2O

eGFR

Female: 87-107 mL/min

Male: 107-139 mL/min

Specific Gravity

1.010-1.030

pH (urine)

4.6-8

Osmolality

50-1400 mOsm/kg

Uric Acid

female 2.7-7.3 mg/dL

male 4-8.5 mg/dL

Hgb A1C

<4-6%

Fasting Blood Glucose

60-100 mg/dL

Lipase

0-160 units/L

Amylase

30-220 units/L

Ammonia

10-80 mg/dL

ALT

4-36 units/L

AST

0-35 units/L

ALP (alkaline phosphatase)

30-120 units/L

Albumin

3.5-5 g/dL

Total Protein

6.4-8.3 g/dL

Bilirubin

0.3-1 mg/dL

TSH

2-10 mU/L

T3

40-180 ng/dL

T4

5-12 mcg/dL

Free T4

10-26 pmol/L

0.8-2.7 ng/dL

Cortisol

8am: 5-23 mcg/dL

4pm: 3-13 mcg/dL

ACTH

am: <80 pg/mL

pm: <50 pg/mL

Cholesterol

<200 mg/dL

HDL

female: >55 mg/dL

male: >45 mg/dL

LDL

<130 mg/dL

VLDL

25-50%

Triglycerides

< 150 mg/dL

Troponin

T< 0.01 ng/mL

I < 0.03 ng/mL

CPK = CK

female: 30 - 135 units/L

male: 55 - 170 units/L

Myoglobin

less than 90mcg/L

BNP

< 100 pg/mL or

< 100 ng/L

ESR

<20 mm/Hr

CRP

<1.0 mg/dL