FIB-4 Index

Non-invasive biomarker for liver fibrosis stage.

Medical Disclaimer

This tool is for educational and screening purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

Fibrosis Biomarkers

Age (Years)

Platelets (10³/µL)

AST (U/L)

ALT (U/L)

FIB-4 Index

1.35

LOW RISK FOR ADVANCED FIBROSIS

APRI Score

0.38

Found this tool helpful? Share it with your friends!

About FIB-4 Index

The FIB-4 (Fibrosis-4) Index is a widely utilized, non-invasive biomarker tool designed to assess the stage of liver fibrosis. It is particularly valuable for clinicians and healthcare professionals managing patients with chronic liver diseases, such as non-alcoholic fatty liver disease (NAFLD/NASH) or viral hepatitis. The index calculates a score based on age, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and platelet count. This simple calculation helps identify individuals at low or high risk of advanced fibrosis, potentially reducing the need for invasive liver biopsies and guiding more targeted clinical management. Its ease of use and readily available input parameters make it an essential first-line screening tool.