Liver Function Test Normal Range

A good ALT to AST ratio, also known as the De Ritis ratio, is generally considered to be around 1:1. A ratio greater than 2:1 is often seen in alcoholic liver disease.

AST and ALT levels greater than 2-3 times the normal range can indicate cirrhosis, especially if the AST is higher than the ALT, often seen in advanced liver disease or acute viral hepatitis.

The normal range for liver function tests varies, but common ranges are ALT (4-36 IU/L), AST (5-30 IU/L), ALP (30-120 IU/L), and Bilirubin (2-17 micromol/L). Always compare results with lab-specific reference ranges.