FIB-4 Liver Fibrosis Calculator
Result
Calculated result
3.3541019662
Based on the values entered.
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FIB-4 Liver Fibrosis Calculator — free online calculator.
Formula
FIB-4 = (age × AST) ÷ (platelets × √ALT)
- FIB-4 Liver Fibrosis Calculator calculates its result from Age, Ast, Platelets, Alt. It uses the formula FIB-4 = (age × AST) ÷ (platelets × √ALT). Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Age, Ast, Platelets, Alt. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: FIB-4 Liver Fibrosis
Inputs
- Age: 10
- Ast: 3
- Platelets: 4
- Alt: 5
Using Age = 10, Ast = 3, Platelets = 4, Alt = 5, the calculated result is 3.3541019662.
Sample result: Calculating…
Frequently asked questions
What does the FIB-4 Liver Fibrosis calculate?
FIB-4 Liver Fibrosis Calculator — free online calculator.
Which values should I enter?
Enter Age, Ast, Platelets, Alt using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: FIB-4 = (age × AST) ÷ (platelets × √ALT).
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.