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 ...

Like most chronic liver diseases, in NAFLD there is a long period during which an individual patient remains essentially asymptomatic. In asymptomatic individuals, the diagnosis is often made when a ...

A new cohort study of adolescent offenders in Australia has identified an upper limit for ALT that is more sensitive for the diagnosis of liver disease. The findings could facilitate targeted ...

The liver makes several enzymes to help function, including alanine aminotransferase, or ALT. Doctors can measure levels of ALT in the blood to help diagnose various liver conditions. Besides helping ...

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 ...

A 42-year-old man presents with low-grade fever, anorexia, dark urine, light-colored stools, and right upper quadrant aching discomfort of 2 weeks' duration. He indicates that he has consumed a pint ...