It has recently been proposed that the true upper normal limit of serum alanine aminotransferase (ALT) is much lower than that listed by the manufacturers of commercially available assays. The normal ...

OBJECTIVE: To investigate an association between the metabolic syndrome (MS) and alanine aminotransferase (ALT) of normal ranges. DESIGN: A population-based cross-sectional survey in three rural ...

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.

If you have high ALT levels — a liver enzyme known as alanine aminotransferase — it may be due to a liver problem. Here's what you need to know about these liver enzymes and how to lower your ALT ...