Normal Values of Common Laboratory Tests

SERUM TESTS

HEMATOLOGICMENWOMEN
Hemoglobin14–17.3 g/dL11.7–15.5 g/dL
Hematocrit42–52%36–48%
Red blood cells (RBC)4.51–6.01 million/mm34.01–5.51 million/mm3
Mean corpuscular volume (MCV)77–97 (micrometer)378–102 (micrometer)3
Mean corpuscular hemoglobin (MCH)27–35 picogram27–35 picogram
Mean corpuscular hemoglobin concentration (MCHC)32–36 g/dL32–36 g/dL
Erythrocyte sedimentation rate (ESR)≤20 mm/hr≤30 mm/hr
Leukocytes (WBC)4500–11,100/mm34500–11,100/mm3
Neutrophils40–75% (2700–6500/mm3)40–75% (2700–6500/mm3)
Bands3–8% (150–700/mm3)3–8% (150–700/mm3)
Eosinophils0–5.5% (50–400/mm3)0–5.5% (50–500/mm3)
Basophils0–1% (0–100/mm3)0–1% (0–100/mm3)
Monocytes4–9% (200–400/mm3)4–9% (200–400/mm3)
Lymphocytes14–44% (1500–3700/mm3)14–44% (1500–3700/mm3)
T lymphocytes60–80% of lymphocytes60–80% of lymphocytes
B lymphocytes10–20% of lymphocytes10–20% of lymphocytes
Platelets150,000–450,000/mm3150,000–450,000/mm3
Prothrombin time (PT)10–13 sec10–13 sec
Partial thromboplastin time (PTT)30–45 sec30–45 sec
Bleeding time (duke)1–3 min1–3 min
(ivy)2–7 min2–7 min
(template)2.5–10 min2.5–10 min
CHEMISTRYMEN WOMEN
Sodium135–145 mEq/L135–145 mEq/L
Potassium3.5–5.3 mEq/L3.5–5.3 mEq/L
Chloride97–107 mEq/L97–107 mEq/L
Bicarbonate (HCO3)19–25 mEq/L19–25 mEq/L
Total calcium8.4–10.2 mg/dL or 4.5–5.5 mEq/L8.4–10.2 mg/dL or 4.5–5.5 mEq/L
Ionized calcium4.64–5.52 mg/dL or 2.1–2.6 mEq/L4.64–5.52 mg/dL or 2.1–2.6 mEq/L
Phosphorus/phosphate2.5–4.5 mg/dL2.5–4.5 mg/dL
Magnesium1.6–2.2 mg/dL or 1.5–2.5 mEq/L1.6–2.2 mg/dL or 1.5–2.5 mEq/L
Glucose65–99 mg/dL65–99 mg/dL
Osmolality275–295 mOsm/kg275–295 mOsm/kg
Ammonia (NH3)10–80 mcg/dL10–80 mcg/dL
Amylase100–300 U/L100–300 U/L
Creatine phosphokinase total (CK, CPK)50–204 U/L36–160 U/L
Creatine kinase isoenzymes, MB fraction0–4% in MI0–4% in MI
Lactic dehydrogenase (LDH)90–156 U/L90–156 U/L
Protein, total6–8 g/d6–8 g/d
Albumin3.7–5.1 g/dL3.7–5.1 g/dL
HEPATICMENWOMEN
AST20–40 U/L15–30 U/L
ALT19–36 IU/mL24–36 IU/mL
Total bilirubin0.3–1.2 mg/dL0.3–1.2 mg/dL
Conjugated bilirubin0.0–0.3 mg/dL0.0–0.3 mg/dL
Unconjugated (indirect) bilirubin0.2–1.1 mg/dL0.2–1.1 mg/dL
Alkaline phosphatase35–142 U/L25–125 U/L
RENALMEN WOMEN
BUN8–21 mg/dL8–21 mg/dL
Creatinine0.61–1.21 mg/dL0.51–1.11 mg/dL
Uric acid4.0–8.2 mg/dL2.5–7.3 mg/dL
ARTERIAL BLOOD GASESMEN WOMEN
pH7.35–7.457.35–7.45
Po280–95 mm Hg80–95 mm Hg
Pco235–45 mm Hg35–45 mm Hg
O2 saturation95–99%95–99%
Base excess+3–(-2)+3–(-2)
Bicarbonate (HCO3-)22–26 mEq/L22–26 mEq/L

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