Calculate FIB-4 index for non-invasive liver fibrosis staging. FIB-4 = (Age × AST) / (Platelet Count × √ALT). Low risk: <1.30; Indeterminate: 1.30–2.67; High risk: >2.67 (significant fibrosis).
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APRI Score
Niche Medical Tools
NAFLD Fibrosis Score
FAST Score