Learning

open
close

A | Adult Lab Values

January 11, 2026 | by Bloom Code Studio

Note: These values could change slightly based on parameters set by specific healthcare facilities

Complete Blood Count (CBC)
Red blood cell (RBC)4.5 – 5.0 million cells/mm3 (female)
4.7 – 6.2 million cells/mm3 (male)
White blood cell (WBC)4,500 – 11,000 cells/mm3
Hemoglobin12 – 16 g/dL (female)
13 – 17 g/dL (male)
Hematocrit35 – 47% (female)
42 – 53% (male)
Platelets150,000 – 400,000/mm3
Complete Metabolic Panel (CMP)
Blood urea nitrogen (BUN)6 – 24 mg/dL
Serum creatinine0.6 – 1.2 mg/dL
Estimated glomerular filtration rate (eGFR)> 60 mL/min/1.73m2
Carbon dioxide23 – 29 mmol/L
Glucose65 – 110 mg/dL
Chloride95 – 105 mEq/L
Potassium3.5 – 5.2 mEq/L
Sodium135 – 145 mEq/L
Calcium8.3 – 10.2 md/dL
Phosphorus3.0 – 4.5 mg/dL
Magnesium1.3 – 2.1 mEq/L
Serum osmolality285 – 295 mOsm/kg H2O
Albumin3.5 – 5.5 g/dL
Total protein5.5 – 8.3 g/dL
Bilirubin0.1 – 1.2 mg/dL
Liver function tests (LFTs)

Aspartate aminotransferase (AST)


Alanine aminotransferase (ALT)


9 – 25 units/L (female)
10 – 40 units/L (male)

7 – 20 units/L (female)
10 – 55 units/L (male)
Arterial Blood Gas (ABG)
pH7.35 – 7.45
Partial pressure of oxygen (PaO2)80 – 100%
Partial pressure of carbon dioxide (PaCO2)35 – 45 mmHg
Bicarbonate (HCO3)22 – 26 mEq/L
Coagulation Labs
International normalized ratio (INR)0.8 – 1.2
2 – 3 is normal for patients on warfarin
Prothrombin time (PT)11 – 13 seconds
1.5-2x longer if on anticoagulants
Partial thromboplastin time (PTT)60 – 70 seconds
1.5 – 2x longer if on anticoagulants
Activated partial thromboplastin time (aPTT)25 – 35 seconds
1.5 – 2x longer if on anticoagulants
Lipid Panel
High density lipoprotein (HDL)> 40 mmol/L
Low density lipoprotein (LDL)< 100 mmol/L
Triglycerides< 120 mmol/L
Total cholesterol< 170 mmol/L
Hemoglobin A1C
Normal< 5.7%
Prediabetes5.7 – 6.4%
Diabetes> 6.5%

Table A1 Adult Lab Values