Health

AST/ALT Ratio Calculator

Calculate the De Ritis ratio to help differentiate liver conditions.

AST (IU/L)

ALT (IU/L)

AST/ALT Ratio—

Interpretation—

AST/ALT Ratio = AST ÷ ALT

About the De Ritis Ratio

The AST/ALT ratio (De Ritis ratio) helps differentiate between causes of liver damage. A ratio > 2 strongly suggests alcoholic liver disease. A ratio < 1 is more consistent with non-alcoholic fatty liver disease (NAFLD) or viral hepatitis.

Interpretation

< 1.0: Suggests viral hepatitis or NAFLD.
1.0–2.0: May suggest advanced fibrosis or cirrhosis.
> 2.0: Strongly suggests alcoholic hepatitis.