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Clinical Laboratory Tests
Normal Values
This table lists reference values for the most common laboratory tests and is intended for interpretation of the results as they are provided in the examinations. Note that all values are provided in SI units. All values apply to adults.
Many important laboratory reference values are not listed here, because of the less frequent use of these tests. Such values are inserted in parentheses following the result recorded in the examination questions.
| Blood |
| Coagulation (Hemostasis) |
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| Bleeding time (Ivy) |
< 9 minutes |
| International Normalized Ratio (INR) |
0.9-1.2 |
| Partial thromboplastin time (PTT) |
28-38 seconds |
| Prothrombin time (PT) |
10-13 seconds |
| |
| Hemogram |
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| Hematocrit (Hct) |
| Female
|
0.370-0.460 |
| Male
|
0.420-0.520 |
| Hemoglobin (Hb) |
| Female
|
123-157 g/L |
| Male
|
140-174 g/L |
| Mean corpuscular volume (MCV) |
80-100 fL |
| Mean corpuscular hemoglobin (MCH) |
27-34 pg |
| Platelet count |
130-400 X 109/L |
| Red blood cells (RBC) |
| Female
|
4.0-5.2 X 1012/L |
| Male
|
4.4-5.7 X 1012/L |
| Red cell distribution width (RDW) |
11.5-14.5% |
| Reticulocyte count |
20-84 X 109/L |
| Erythrocyte sedimentation rate (Westergren) |
| Female
|
1-20 mm/hour |
| Male
|
1-13 mm/hour |
| White blood cells & differential |
| White blood cell count (WBC)
|
4-10 X 109/L |
| Segmented neutrophils
|
2-7 X 109/L |
| Band neutrophils
|
<0.7 X 109/L |
| Basophils
|
<0.10 X 109/L |
| Eosinophils
|
<0.45 X 109/L |
| Lymphocytes
|
1.5-3.4 X 109/L |
| Monocytes
|
0.14-0.86 X 109/L |
| |
| Chemical Constituents |
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| Albumin (serum) |
35-50 g/L |
| Alkaline phosphatase (serum) |
35-100 U/L |
| Aminotransferase (transaminase) (serum) |
| Alanine (ALT; SGPT)
|
3-36 U/L |
| Aspartate (AST; SGOT)
|
0-35 U/L |
| Gamma glutamyl transferase
|
| Female
|
10-30 U/L |
| Male
|
10-35 U/L |
| Amylase (serum) |
<160 U/L |
| Bicarbonate (HCO3) (serum) |
24-30 mmol/L |
| Bilirubin (serum) |
| Direct (conjugated)
|
<7 µmol/L |
| Total
|
<26 µmol/L |
| Calcium (serum) |
| Total
|
2.18-2.58 mmol/L |
| Ionized
|
1.05-1.30 mmol/L |
| Chloride (serum) |
98-106 mmol/L |
| Cholesterol (serum) |
<5.2 mmol/L |
| Low density lipoprotein (LDL) |
<3.37 mmol/L |
| High density lipoprotein (HDL) |
>0.9 mmol/L |
| Cortisol |
160-810 mmol/L |
| Creatine kinase (CK) (serum) |
5-130 U/L |
| Creatinine (serum) |
| Female
|
50-90 µmol/L |
| Male
|
70-120 µmol/L |
| Ferritin |
10-250 µg/L |
| Folic (Folate) |
7-36 nmol/L |
| Glucose fasting (serum) |
3.3-5.8 mmol/L |
| Hemoglobin A1C |
4-6% |
| Iron (serum) |
11-32 µmol/L |
| Lactate dehydrogenase (LDH) (serum) |
95-195 U/L |
| Lipase (serum) |
<160 U/L |
| Magnesium (serum) |
0.75-0.95 mmol/L |
| Osmolality (serum) |
280-300 mmol/kg |
| Oxygen saturation (arterial blood) (SaO2) |
96-100% |
| PaCO2 (arterial blood) |
35-45 mm Hg |
| PaO2 (arterial blood) |
85-105 mm Hg |
| pH |
7.35-7.45 |
| Phosphorus (inorganic) (serum) |
0.8-1.5 mmol/L |
| Potassium (serum) |
3.5-5.0 mmol/L |
| PSA (Prostate Specific Antigen) |
0-4 µg/L |
| Protein (serum) |
| Total
|
60-80 g/L |
| Albumin
|
35-50 g/L |
| Sodium (serum) |
135-145 mmol/L |
| Thyroid-stimulating hormone (sensitive) |
0.4-5.0 mU/L |
| T3 (free) |
3.5-6.5 pmol/L |
| T4 (free) |
8.5-15.2 pmol/L |
| TIBC (Total Iron Binding Capacity) |
45-82 µmol/L |
| Transaminase - see Aminotransferase |
| Triglycerides (serum) |
<2.20 mmol/L |
| Troponin T (TnT) |
<0.01 µg/L |
| Urea nitrogen (BUN) (serum) |
2.5-8.0 mmol/L |
| Uric acid (serum) |
180-420 µmol/L |
| Vitamin B12 |
74-516 pmol/L |
| |
| Cerebrospinal Fluid |
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| Cell count |
<4 x 106/L |
| Glucose |
2-4 mmol/L |
| Proteins (total) |
0.20-0.45 g/L |
| Urine |
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| Calcium |
<7.3 mmol/day |
| Chloride |
110-250 mmol/day |
| Creatinine |
6.2-17.7 mmol/day |
| Osmolality |
100-1200 mOsm/kg |
| Potassium |
25-120 mmol/day |
| Protein |
<0.15 g/day |
| Sodium |
25-260 mmol/day |
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© The Medical Council of Canada, 2009
