Normal Laboratory Values for Adults
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CHEMISTRY |
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Chemistry, Routine
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Albumin |
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3.5-5.0 g/dL |
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Bilirubin, conjugated |
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0-0.2 mg/dL |
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Bilirubin, total |
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0.2-1.2 mg/dL |
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Blood urea nitrogen |
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8-23 mg/dL |
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Calcium |
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8.4-10.3 mg/dL |
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Creatinine |
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0.5-1.2 mg/dL |
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Glucose |
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65-110 mg/dL |
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Phosphorus |
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2.8-4.5 mg/dL |
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Protein, total |
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6.0-8.0 g/dL |
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Uric acid |
male |
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3.5-7.2 mg/dL |
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Electrolytes |
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Chlorides |
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100-110 mEq/L |
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CO2 |
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23-31 mEq/L |
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Potassium |
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3.5-5.0 mEq/L |
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Sodium |
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136-146 mEq/L |
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Anion gap |
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5-14 mEq/L |
Enzymes
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Alkaline phosphatase |
male |
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34-110 units/L |
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ALT |
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5-35 units/L |
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AST |
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5-35 units/L |
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CPK |
male |
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0-206 units/L |
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LDH |
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50-200 units/L |
Thyroid Function
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FTI (free thyroxine index) |
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4.5-12.0 |
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T3 resin uptake |
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25%-35% |
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T3 (tri-iodothyronine) by RIA |
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70-200 ng/dL |
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T4 (thyroxine) by RIA |
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4.0-11.0 μg/dL |
Others
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Ammonia, plasma |
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20-60 μg/dL |
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Amylase, serum |
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44-128 units/L |
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Calcium, ionized |
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4.6-5.2 mg/dL |
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Cholesterol |
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140-230 mg/dL |
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Iron, serum |
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50-170 μg/dL |
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Lactate, serum |
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1.4-3.9 mEq/L |
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Lipase |
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10-208 units/L |
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Magnesium |
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1.5-2.5 mg/dL |
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Oncotic pressure |
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22-28 mm Hg |
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Osmolality |
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280-300 mOsm/kg |
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Serum ferritin |
male |
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25-400 ng/mL |
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TIBC |
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270-390 μg/dL |
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Triglycerides |
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50-150 mg/dL |
HEMATOLOGY
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Hematocrit |
male |
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40%-52% |
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Hemoglobin |
male |
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13.5-17.5 g/dL |
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MCH |
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27-34 pg |
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MCV |
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82-100 fL |
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Platelet count |
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150-450 103/mm3 |
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RBC count |
male |
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4.5-5.9 106/mm3 |
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Reticulocyte count |
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0.5%-1.5% |
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Sed rate (Westergren) |
male |
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0-10 mm/h |
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WBC count |
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4.5-11.0 103/mm3 |
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WBC differential |
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bands |
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2%-8% |
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basophils |
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0%-2% |
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eosinophils |
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0%-4% |
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lymphocytes |
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20%-45% |
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monocytes |
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2%-8% |
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neutrophils |
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40%-70% |
BLOOD GASES
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Arterial
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Venous
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Base excess |
-3.0 to +3.0 mEq/L |
-5.0 to +5.0 mEq/L |
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HCO3 |
18-25 mEq/L |
18-25 mEq/L |
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O2 saturation |
90%-98% |
60%-85% |
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pCO2 |
34-45 mm Hg |
35-52 mm Hg |
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pH |
7.35-7.45 |
7.32-7.42 |
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pO2 |
80-95 mm Hg |
30-48 mm Hg |
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TCO2 |
23-29 mEq/L |
24-30 mEq/L |
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Weight/Volume Equivalents |
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1 mg/dL = 10 μg/mL |
1 ppm = 1 mg/L |
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1 mg/dL = 1 mg% |
1 μg/mL = 1 mg/L |
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*The normal ranges for laboratory values vary with
different age groups, and may change as new methodologies for the lab tests are
used. These values are current for adults (age 17 years or older). Note: Normal laboratory values may differ
according to laboratory, institution, and analytical technique. |
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