Liver enzymes are proteins in your liver that speed up chemical reactions. If your liver is damaged, blood tests will show abnormally high levels of these enzymes circulating in your bloodstream.

Dear Dr. Roach: I'm a 65-year-old male. On my recent semiannual checkup, my labs showed an AST level of 53 U/L and an ALT level of 62 U/L. I am concerned about nonalcoholic fatty liver disease. In ...

Routine blood tests are increasingly identifying abnormal liver enzymes in those who otherwise seem to be in perfect health. According to experts, while the presence of slightly increased liver ...

Fibrosis markers. Blood tests that can estimate the degree of fibrosis in the liver are relatively new. Each test, or marker, utilizes various methods to determine the stage of fibrosis. There are ...