Medical Lab Tests — Lab Values Reference

Red Blood Cells

• RBC — Men: 4.5 – 5.5 x10¹²/L (4.5 – 5.5 M/mcL) | Women: 4.0 – 5.0 x10¹²/L (4.0 – 5.0 M/mcL)
• Hemoglobin — Men: 135 – 175 g/L (13.5 – 17.5 g/dL) | Women: 120 – 160 g/L (12.0 – 16.0 g/dL)
• Hematocrit — Men: 0.39 – 0.50 L/L (38.8 – 50.0%) | Women: 0.35 – 0.45 L/L (34.9 – 44.5%)
• MCV — 80 – 100 fL
• MCH — 27 – 33 pg
• MCHC — 320 – 360 g/L (32.0 – 36.0 g/dL)
• RDW — 11.5 – 14.5%

White Blood Cells

• WBC — 4.5 – 11.0 x10⁹/L (4,500 – 11,000 cells/mcL)
• Neutrophils — 2.0 – 7.5 x10⁹/L (40 – 70%)
• Lymphocytes — 1.0 – 4.0 x10⁹/L (20 – 40%)
• Monocytes — 0.2 – 0.8 x10⁹/L (2 – 8%)
• Eosinophils — 0.04 – 0.4 x10⁹/L (1 – 4%)
• Basophils — 0.01 – 0.1 x10⁹/L (0.5 – 1%)

Platelets

• Platelets — 150 – 400 x10⁹/L (150,000 – 400,000 cells/mcL)
• MPV — 7.5 – 11.5 fL

Basic Metabolic Panel (BMP)

Electrolytes

• Sodium — 136 – 145 mmol/L (136 – 145 mEq/L)
• Potassium — 3.5 – 5.0 mmol/L (3.5 – 5.0 mEq/L)
• Chloride — 98 – 106 mmol/L (98 – 106 mEq/L)
• Bicarbonate (CO2) — 23 – 29 mmol/L (23 – 29 mEq/L)
• Calcium — 2.12 – 2.62 mmol/L (8.5 – 10.5 mg/dL)

Kidney Function

• BUN — 2.5 – 7.1 mmol/L (7 – 20 mg/dL)
• Creatinine — 62 – 115 µmol/L (0.7 – 1.3 mg/dL)
• Glucose (fasting) — 3.9 – 5.6 mmol/L (70 – 100 mg/dL)

Liver Function Tests (LFTs)

Enzymes

• ALT — 7 – 56 U/L
• AST — 10 – 40 U/L
• ALP — 44 – 147 U/L
• GGT — Men: 8 – 61 U/L | Women: 5 – 36 U/L

Bilirubin & Proteins

• Total Bilirubin — 1.7 – 20.5 µmol/L (0.1 – 1.2 mg/dL)
• Direct Bilirubin — 0 – 5.1 µmol/L (0 – 0.3 mg/dL)
• Albumin — 35 – 55 g/L (3.5 – 5.5 g/dL)
• Total Protein — 60 – 83 g/L (6.0 – 8.3 g/dL)

Coagulation Studies

• PT — 11 – 13.5 seconds
• INR — 0.8 – 1.1 (therapeutic on warfarin: 2.0 – 3.0)
• aPTT — 25 – 35 seconds
• Fibrinogen — 2.0 – 4.0 g/L (200 – 400 mg/dL)
• D-dimer — < 0.50 mg/L (< 500 ng/mL)

Thyroid Function

• TSH — 0.4 – 4.0 mIU/L
• Free T4 — 10 – 23 pmol/L (0.8 – 1.8 ng/dL)
• Free T3 — 3.5 – 6.5 pmol/L (2.3 – 4.2 pg/mL)

Lipid Panel

• Total Cholesterol — < 5.2 mmol/L (< 200 mg/dL) desirable
• LDL — < 2.6 mmol/L (< 100 mg/dL) optimal
• HDL — > 1.0 mmol/L (> 40 mg/dL) men | > 1.3 mmol/L (> 50 mg/dL) women
• Triglycerides — < 1.7 mmol/L (< 150 mg/dL)

Looking Up Lab Values on the Go

The reference ranges in this article are general guidelines for adults. Ranges may vary between laboratories. Always consult your healthcare provider or laboratory for facility-specific ranges. This content is for educational purposes and is not a substitute for professional medical advice.