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APRI Calculator
Calculate AST-to-Platelet Ratio Index (APRI) for liver fibrosis assessment
Clinical Formula: $\text{APRI} = \frac{\left(\frac{\text{AST}}{\text{Standard Upper Limit of Normal (ULN = 40 U/L)}}\right)}{\text{Platelet Count } (10^9/\text{L})} \times 100$. APRI > 1.5 suggests significant fibrosis (F3–F4), while APRI > 2.0 suggests cirrhosis. Enter lab values below.
Laboratory Parameters Input
Calculation Results
⚠️ Not medical advice. For educational and clinical decision support only. Always consult a hepatologist or gastroenterologist for formal interpretation of liver panels and fibrosis staging.