All calculatorsHepatology

FIB-4 Index

Noninvasive estimate of liver fibrosis from age and routine labs — a first-line screen before considering elastography or biopsy.

For healthcare professionals.These calculate a score or a measurement from values you enter. They do not diagnose, and they are no substitute for clinical judgement. If you are a patient, discuss any result with your own doctor rather than acting on it.

Ageyears

ASTU/L

ALTU/L

Platelet Count×10⁹/L

Enter the values above to see the result.

Source

Sterling RK, Lissen E, Clumeck N, et al. Development of a simple noninvasive index to predict significant fibrosis in patients with HIV/HCV co-infection. Hepatology. 2006;43(6):1317-1325.

Shown for reference and checked against the source above. Confirm against current guidance before acting on it, and use your own clinical judgement.

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