Health

NAFLD Fibrosis Score Calculator

Non-invasive assessment of liver fibrosis in NAFLD patients.

Age

BMI (kg/m²)

Diabetes / IFG?

AST/ALT Ratio

Platelets (×10⁹/L)

Albumin (g/dL)

NAFLD Fibrosis Score

NFS = −1.675 + 0.037×age + 0.094×BMI + 1.13×(diabetes) + 0.99×(AST/ALT) − 0.013×platelets − 0.66×albumin. Score < −1.455 rules out advanced fibrosis (NPV ~93%). Score > 0.676 rules in advanced fibrosis (PPV ~90%). Indeterminate scores may need FibroScan or liver biopsy.