Reference Values For Common Laboratory Tests, PSAP.pdf

Reference values for common laboratory tests include:
Serum Chemistries:
- Alanine aminotransferase (ALT): 10–40 U/L
- Albumin: 3.5–5 g/dL (adults), 3.4–4.2 g/dL (young children)
- Alkaline phosphatase (ALP): 30–120 IU/L (adults), 150–420 IU/L (children)
- Ammonia: 15–45 mcg/dL
- Amylase: 27–131 U/L
- Aspartate aminotransferase (AST): 10–30 U/L
- Bilirubin, direct: 0.1–0.3 mg/dL
- Bilirubin, total: 0.3–1.2 mg/dL
- Blood urea nitrogen (BUN): 8–23 mg/dL (adults), lower in children
- Calcium, ionized: 4.6–5.1 mg/dL
- Calcium, total serum: 8.2–10.2 mg/dL
- Carbon dioxide (venous) (CO2): 22–28 mEq/L
- Chloride (Cl): 96–106 mEq/L
- C-reactive protein (CRP): 0.08–3.1 mg/L
- Creatinine kinase (CK): 40–150 U/L
- Creatinine, serum (SCr): 0.6–1.2 mg/dL (adults), 0.2–0.7 mg/dL (children)
- Creatinine (clearance) (CrCl): 75–125 mL/minute/1.73 m2
- Ferritin: 15–200 ng/mL
- γ-Glutamyl transpeptidase: 2–30 U/L
- Glucose, serum: 70–110 mg/dL
- Hemoglobin A1C percent of total hemoglobin: 4%–7%
- Lactate dehydrogenase (LDH): 100–200 U/L
- Lipase: 31–186 U/L
- Magnesium: 1.3–2.1 mEq/L
- Osmolality, serum: 275–295 mOsm/kg
- Phosphorus: 2.3–4.7 mg/dL (adults), 3.7–5.6 mg/dL (children)
- Potassium: 3.5–5.0 mEq/L
- Prealbumin: 19.5–35.8 mg/dL
- Sodium: 136–142 mEq/L
- Uric acid, serum: 4–8 mg/dL

Hematology/Coagulation:
- Hematocrit (Hct): 42%–50% (men), 36%–45% (women)
- Hemoglobin (Hgb): 14–18 g/dL (men), 12–16 g/dL (women)
- International normalized ratio (INR): 0.9–1.1
- Mean corpuscular hemoglobin (MCH): 26–34 pg/cell
- Mean corpuscular hemoglobin concentration (MCHC): 33–37 g/dL
- Mean corpuscular volume (MCV): 80–100 fL/cell
- Partial thromboplastin time (PTT): 25–40 seconds
- Platelet count (Plt): 150,000–350,000 cells/mm3
- Prothrombin time (PT): 10–13 seconds
- Red blood cell count (RBC): 4.5–5.9 × 106 cells/mm3 (men), 4.1–5.1 × 106 cells/mm3 (women)
- Reticulocyte percent of red blood cells: 0.5%–1.5%
- White blood cell count (WBC): 4.5–11.0 × 103 cells/mm3

Serum Lipids:
- Cholesterol, total (TC), desirable: < 200 mg/dL
- High-density lipoprotein (HDL) cholesterol, desirable: ≥ 60 mg/dL
- Low-density lipoprotein (LDL) cholesterol: < 100 mg/dL
- Triglycerides (TG): < 150 mg/dL

Blood Gases:
- Arterial:
- pH: 7.35–7.45
- Partial pressure of carbon dioxide (PCO2): 35–45 mm Hg
- Partial pressure of oxygen (PO2): 80–100 mm Hg
- Oxygen saturation (SaO2): > 90%
- Venous:
- pH: 7.31–7.41
- Partial pressure of carbon dioxide (PCO2): 40–52 mm Hg
- Partial pressure of oxygen (PO2): 30–50 mm Hg
- Oxygen saturation (SaO2): 60%–75%
- Serum bicarbonate (HCO3): 22–26 mEq/L (arterial), 21–28 mEq/L (venous)

Urinalysis:
- Leukocyte esterase, nitrite, protein, blood, ketones, bilirubin, glucose: Negative
- pH: 4.5–8.0
- Specific gravity: 1.010–1.025