🇺🇸 US Reference Range
0.6–1.2 mg/dL
🇪🇺 EU Reference Range (SI Units)
53–106 μmol/L
Mayo Clinic Reference Range
0.59–1.35 mg/dL
Note: Reference range for adults: Males ≥15 years: 0.74-1.35 mg/dL, Females ≥16 years: 0.59-1.04 mg/dL. Combined range: 0.59-1.35 mg/dL