Medically reviewed by Jay N. Yepuri, MD Key Takeaways High levels of liver enzymes can suggest liver inflammation or disease.Liver enzyme tests can help diagnose issues like hepatitis, cirrhosis, and ...

An AST blood test measures levels of aspartate aminotransferase (AST) and helps determine liver function. Less than 40 IU/L is normal, but too much of this enzyme can indicate a problem, such as liver ...

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 ...

The Fibrosis-4 (FIB-4) index, computed from age, aspartate aminotrasfertase (AST) and alanine aminotransferase (ALT) levels, and platelet count, was originally developed in 832 pa ...

Altered liver enzymes consistently were tied to Alzheimer's disease, an observational study of older adults showed. Aspartate aminotransferase (AST) to alanine aminotransferase (ALT) ratios were ...

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 ...