Lab Values Normal Range

Red blood cell (RBC) count

Females: 4.2-5.4 × 106/μL (4.2-5.4 × 1012 cells/L); Males: 4.7-6.1 × 106/μL (4.7-6.1 × 1012 cells/L)

White blood cell (WBC) count

5000-10,000/mm3 (5.0-10.0 × 109 cells/L); Critical values:

Hemoglobin (Hgb)

Females: 12-16 g/dL (7.4-9.9 mmol/L); Males: 14-18 g/dL (8.7-11.2 mmol/L); Critical values:

Hematocrit (Hct)

Females: 37%-47% (0.37-0.47 volume fraction); Males: 42%-52% (0.42-0.52 volume fraction); Critical values:

Platelet count

150,000-400,000/mm3 (150-400 × 109/L)

PTT

1.5-2.5 times control value

INR

0.8-1.1

Albumin

≥3 g/dL (30 g/L)

Urine Specific gravity

1.005-1.030; usually 1.01-1.025

Urine PH

Average: 6; range: 4.6-8

Urine Glucose

Fresh specimen: Negative; 24-hr specimen: 50-300 mg/day (0.3-1.7 mmol/day)

Urine Ketones

None

GFR

90-120 ml/min/1.73m3

BUN

10-20 mg/dL (3.6-7.1 mmol/L)

Creatinine

Male: 0.6-1.2 mg/dL (53-106 mmol/L); Female: 0.5-1.1 mg/dL (44-97 mmol/L) ; Older adults: May be slightly increased

BUN/creatinine ratio (BUN divided by creatinine)

6-25 ; (15.5 optimum level for adults)

Sodium

136-145 mEq/L (136-145 mmol/L)

Potassium

3.5-5 mEq/L (3.5-5 mmol/L)

Calcium: Total calcium

9-10.5 mg/dL (2.25-2.62 mmol/L)

Phosphorus

3-4.5 mg/dL (0.97-1.45 mmol/L)

Magnesium

1.3-2.1 mEq/L

Glucose

80-130 mg/dL before meals

Arterial blood pH

7.35-7.45

Arterial blood bicarbonate (HCO3−)

21-28 mEq/L

Arterial blood PCO2

35-45 mm Hg