Alanine aminotransferase (ALT) is an enzyme that appears mostly in the liver. Having high levels of ALT may be a sign of liver disease. While ALT can also be found in the kidneys, heart, and muscle ...

Blood tests can help with the diagnosis of autoimmune hepatitis. These include tests for increased liver enzymes or antibody levels. However, other tests are necessary to confirm the diagnosis.

Alanine aminotransferase (ALT) is an enzyme primarily found in your liver. An enzyme is a protein that helps speed up chemical reactions. ALT is involved in cellular energy production. ALT levels in ...