FIB-4 Liver Fibrosis Score Calculator

Calculate FIB-4 index for non-invasive liver fibrosis assessment in NAFLD and chronic hepatitis B/C. Distinguishes mild from advanced fibrosis using routine blood tests.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate FIB-4 index for non-invasive liver fibrosis assessment in NAFLD and chronic hepatitis B/C. Distinguishes mild from advanced fibrosis using routine blood tests

Each component has a specific meaning:

  • Advanced fibrosis — The advanced fibrosis recorded for the patient or scenario being assessed.

Note: Interpret the fib-4 score result against the clinical thresholds and context described above.

How to Use

Enter the advanced fibrosis for the patient or scenario you are assessing. Calculate FIB-4 index for non-invasive liver fibrosis assessment in NAFLD and chronic hepatitis B/C. Distinguishes mild from advanced fibrosis using routine blood tests. Use the fib-4 score result to inform your clinical assessment.

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