four separate liver enzymes are included on most routine laboratory tests. they are -- aspartate aminotransferase (ast or sgot) and alanine aminotransferase (alt or sgpt) which are known together as transaminases; and alkaline phosphatase (ap) and gamma-glutamyl transferase (ggt) which are known together as cholestatic liver enzymes. elevations of these enzymes can indicate the presence of liver disease.
what are liver enzymes?