Reference Ranges for Common Lab Tests

BenchParameterRange (SI Units)
ElectrolytesAmmonia (NH4+)15-50 µmol/L
Ceruloplasmin:15-60 mg/dL
Chloride (Cl-)95-105 mmol/L
Copper (Cu2+)70-150 µg/dL
Creatinine (Cr)Female: 44-97umol/L
Male: 53-106umol/L
Blood urea nitrogen (BUN)8-21 mg/dL
Ferritin:12-300 ng/mL (men), 12-150 ng/mL (women)
Inorganic phosphorous:1-1.5 mmol/L
Ionized calcium (Ca2+)1.03-1.23 mmol/L
Magnesium (Mg2+)1.5-2 mEq/L
Phosphate (PO4-)0.8-1.5 mmol/L
Potassium (K+)3.5-5 mmol/L
Pyruvate:300-900 µg/dL
Sodium (Na+)135-145 mmol/L
Total calcium2-2.6 mmol/L (8.5-10.2 mg/dL)
Total iron-binding capacity (TIBC)45-85 µmol/L
Total serum iron65-180 µg/dL (men), 30-170 µg/dL (women
Transferrin200-350 mg/dL
Urea:1.2-3 mmol/L
Uric acid:0.18-0.48 mmol/L
Zinc:70-100 µmol/L
HematologyHematology
Hemoglobin:13-17 g/dL (men), 12-15 g/dL (women)
Hematocrit40%-52% (men), 36%-47%
Glycosylated hemoglobin (HBA1c)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
Reticulocytes0.5%-1.5%
White blood cells (WBC)4-10 x 10^9/L
Neutrophils:2-8 x 10^9/L
Bands:
Lymphocytes:1-4 x 10^9/L
Monocytes:0.2-0.8 x 10^9/L
Eosinophils:
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
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
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
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
Creatine kinase:25-200 U/L
Creatine kinase MB (CKMB):0-4 ng/mL
Troponin:0-0.4 ng/mL
Hormones
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),
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:
Testosterone (male):10-25 nmol/L
Thyroxine-binding globulin:12-30 mg/L
Thyroid-stimulating hormone (TSH):0.5-5 mIU/L
Total T4,adult: 4.9-11.7 mg/dL
Total T3:0.7-1.5 ng/dL
Free T3:1.7-3.7 pg/mL
Vitamins
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
Alpha fetoprotein:0-44 ng/mL
Beta human chorionic gonadotropin (HCG):
CA19.9:
Carcinoembryonic antigen (CEA):
Prostatic acid phosphatase (PAP):0-3 U/dL
Prostate-specific antigen (PSA):
Miscellaneous
Alpha 1-antitrypsin:20-50 µmol/L
Angiotensin-converting enzyme:23-57 U/L
C-reactive protein:
D-dimer:
Erythrocyte sedimentation rate (ESR):Less than age/2 mm/hour
Lactate dehydrogenase (LDH):50-150 U/L
Lead:
Rheumatoid factor: