Alanine aminotransferase (ALT) is an enzyme primarily found in your liver. An enzyme is a protein that helps speed up ...

For this reason, healthcare professionals may also test levels of alanine aminotransferase (ALT), another liver enzyme. ALT levels occur in higher concentrations in the liver. Looking at both ALT ...

Of the 5,087 participants who had a normal alanine aminotransferase level at baseline, 52 had elevated concentrations (≥1.5 times the normal upper limit) on at least two occasions over a 6-month ...