Lab Tests and Reference Ranges

Sodium (Na)

137-145 mEq/L

Potassium (K)

3.5-5.3 mEq/L

Chloride (Cl)

98-107 mEq/L

Carbon Dioxide (Serum Bicarbonate (HCO₃))

22-30 mEq/L

Blood Urea Nitrogen (BUN)

7-17 mg/dL

Serum Creatinine (Scr)

0.52-1.04 mg/dL

Glucose (BG, Fasting Glucose)

65-105 mg/dL

Creatinine Clearance (CrCl)

90-140 mL/min

Glomerular Filtration Rate (GFR)

>60 mL/min/1.73 m²

Calcium (Ca)

8.4-10.2 mg/dL

Phosphorus (Phos, Phosphate)

2.5-4.5 mg/dL

Magnesium (Mg)

1.6-2.4 mg/dL

Albumin (Alb)

3.5-4.8 g/dL

Alanine Aminotransferase (ALT/SGPT)

9-52 units/L

Aspartate Aminotransferase (AST/SGOT)

14-36 units/L

Direct Bilirubin (Conjugated Bilirubin)

0-0.3 mg/dL

Total Bilirubin (T. bili)

0.2-1.3 mg/dL

HDL Cholesterol

>40 mg/dL

LDL Cholesterol

<130 mg/dL

Triglycerides (TG)

<150 mg/dL

Hemoglobin (Hgb) - Female

12-16 g/dL

Hemoglobin (Hgb) - Male

14-18 g/dL

White Blood Cells (WBC)

4,800-11,000 cells/µL (4.8-11 × 10³ cells/µL)

Platelets (Plt)

140,000-440,000 cells/µL (140-440 × 10³ cells/µL)

pH (ABG)

7.34-7.44

p_aO₂ (ABG)

75-100 mmHg

p_aCO₂ (ABG)

35-45 mmHg

HCO₃ (ABG)

22-26 mEq/L

International Normalized Ratio (INR) - Normal

0.9-1.2

International Normalized Ratio (INR) - Warfarin

2.0-3.0 or 2.5-3.5

Digoxin - Heart Failure

0.5-0.9 mcg/L

Digoxin - Atrial Fibrillation

Adjust to goal HR and keep <2.0 mcg/L

Phenytoin

10-20 mg/L

Theophylline

5-15 mg/L

Vancomycin - AUC/MIC

>400-600 mg × hr/L

Vancomycin - Trough Level

10-20 mcg/mL