Lab Values, Normal Adult 

Updated: May 14, 2014
  • Author: Abimbola Farinde, PharmD, PhD; more...
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Laboratory Reference Ranges in Healthy Adults

The values listed below are generalizations. Each laboratory has specific reference ranges. [1, 2]

Electrolytes

See the list below:

  • Ammonia: 15-50 µmol/L
  • Ceruloplasmin: 15-60 mg/dL
  • Chloride: 95-105 mmol/L
  • Copper: 70-150 µg/dL
  • Creatinine: 0.8-1.3 mg/dL
  • Blood urea nitrogen: 8-21 mg/dL
  • Ferritin: 12-300 ng/mL (men), 12-150 ng/mL (women)
  • Glucose: 65-110 mg/dL
  • Inorganic phosphorous: 1-1.5 mmol/L
  • Ionized calcium: 1.03-1.23 mmol/L
  • Magnesium: 1.5-2 mEq/L
  • Phosphate: 0.8-1.5 mmol/L
  • Potassium: 3.5-5 mmol/L
  • Pyruvate: 300-900 µg/dL
  • Sodium: 135-145 mmol/L
  • Total calcium: 2-2.6 mmol/L
  • Total iron-binding capacity: 45-85 µmol/L
  • Total serum iron: 65-180 µg/dL (men), 30-170 µg/dL (women)
  • Transferrin: 200-350 mg/dL
  • Urea: 1.2-3 mmol/L
  • Uric acid: 0.18-0.48 mmol/L
  • Zinc: 70-100 µmol/L

Hematology

See the list below:

  • Hemoglobin: 13-17 g/dL (men), 12-15 g/dL (women)
  • Hematocrit 40%-52% (men), 36%-47%
  • Glycosylated hemoglobin 4%-6%
  • Mean corpuscular volume (MCV): 80-100 fL
  • Red blood cell distribution width (RDW): 11.5%-14.5%
  • Mean corpuscular hemoglobin (MCH): 0.4-0.5 fmol/cell
  • Mean corpuscular hemoglobin concentration (MCHC): 30-35 g/dL
  • Reticulocytes 0.5%-1.5%
  • White blood cells (WBC) 4-10 x 10^9/L
  • Neutrophils: 2-8 x 10^9/L
  • Bands: < 1 x 10^9/L
  • Lymphocytes: 1-4 x 10^9/L
  • Monocytes: 0.2-0.8 x 10^9/L
  • Eosinophils: < 0.5 x 10^9/L
  • Platelets: 150-400 x 10^9/L
  • Prothrombin time: 11-14 sec
  • International normalized ratio (INR): 0.9-1.2
  • Activated partial thromboplastin time (aPTT): 20-40 sec
  • Fibrinogen: 1.8-4 g/L
  • Bleeding time: 2-9 min

Lipids

See the list below:

  • Triglycerides: 50-150 mg/dL
  • Total cholesterol: 3-5.5 mmol/L
  • High-density lipoprotein (HDL): 40-80 mg/dL
  • Low-density lipoprotein (LDL): 85-125 mg/dL

Acid base

See the list below:

  • pH: 7.35-7.45
  • Base excess: (-3)-(+3)
  • H+: 36-44 nmol/L
  • Partial pressure of oxygen (pO2): 75-100 mm Hg
  • Oxygen saturation: 96%-100%
  • Partial pressure of carbon dioxide (pCO2): 35-45 mm Hg
  • Bicarbonate (HCO3): 18-22 mmol/L

Gastrointestinal function

See the list below:

  • Albumin: 35-50 g/L
  • Alkaline phosphatase: 50-100 U/L
  • Alanine aminotransferase (ALT): 5-30 U/L
  • Amylase: 30-125 U/L
  • Aspartate aminotransferase (AST): 5-30 U/L
  • Direct bilirubin: 0-6 µmol/L
  • Gamma glutamyl transferase: 6-50 U/L
  • Lipase: 10-150 U/L
  • Total bilirubin: 2-20 µmol/L
  • Total protein: 60-80 g/L

Cardiac enzymes

See the list below:

  • Creatine kinase: 25-200 U/L
  • Creatine kinase MB (CKMB): 0-4 ng/mL
  • Troponin: 0-0.4 ng/mL

Hormones

See the list below:

  • 17 hydroxyprogesterone (female, follicular): 0.2-1 mg/L
  • Adrenocorticotropic hormone (ACTH): 4.5-20 pmol/L
  • Estradiol: 1.5-5 ng/dL (male), 2-14 ng/dL (female, follicular), 2-16 ng/dL (female, luteal), < 3.5 ng/dL (postmenopausal)
  • Free T3: 0.2-0.5 ng/dL
  • Free T4: 10-20 pmol/L
  • Follicle-stimulating hormone (FSH): 1-10 IU/L (male), 1-10 IU/L (female, follicular/luteal), 5-25 IU/L (female, ovulation), 30-110 IU/L (postmenopause)
  • Growth hormone (fasting) : 0-5 ng/mL
  • Progesterone: 70-280 (ovulation), ng/dL
  • Prolactin: < 14 ng/mL
  • Testosterone (male): 10-25 nmol/L
  • Thyroxine-binding globulin: 12-30 mg/L
  • Thyroid-stimulating hormone (TSH): 0.5-5 mIU/L
  • Total T4: 4.9-11.7 mg/dL
  • Total T3: 0.7-1.5 ng/dL
  • Free T3: 0.6-1.6 ng/mL

Vitamins

See the list below:

  • Folate (serum) : 7-36 nmol/L
  • Vitamin A: 30-65 µg/dL
  • Vitamin B12: 130-700 ng/L
  • Vitamin C: 0.4-1.5 mg/dL
  • Vitamin D: 5-75 ng/mL

Tumor markers

See the list below:

  • Alpha fetoprotein: 0-44 ng/mL
  • Beta human chorionic gonadotropin (HCG): < 5 IU/I
  • CA19.9: < 40 U/mL
  • Carcinoembryonic antigen (CEA): < 4 ug/L
  • Prostatic acid phosphatase (PAP): 0-3 U/dL
  • Prostate-specific antigen (PSA): < 4 ug/L

Miscellaneous

See the list below:

  • Alpha 1-antitrypsin: 20-50 µmol/L
  • Angiotensin-converting enzyme: 23-57 U/L
  • C-reactive protein: < 5 mg/L
  • D-dimer: < 500 ng/mL
  • Erythrocyte sedimentation rate (ESR): Less than age/2 mm/hour
  • Lactate dehydrogenase (LDH): 50-150 U/L
  • Lead: < 40 µg/dL
  • Rheumatoid factor: < 25 IU/ml