[Significance of gamma-glutamyl-transpeptidase in the diagnosis of liver diseases].

The serum levels of gamma-GT are raised early in most hepatic disorders. The highest levels usually are found in cholestasis, especially due to malignancy of the liver and the pancreas and in chronic alcoholism and drug abuse. The gamma-GT is not strictly a cholestatic enzyme. The highest score of information is yielded in alcoholic liver disease.