It has recently been proposed that the true upper normal limit of serum alanine aminotransferase ... The normal ranges for laboratory parameters such as serum ALT are often derived from the ...

Alanine aminotransferase (ALT) is an enzyme primarily found in ... What's considered to be the normal range depends on the laboratory doing the evaluation, but it is often 7-56 units per liter.

Aspartate aminotransferase ... ALT accompanied by a high AST can tell us how advanced the liver disease is. ALT and AST are measured in international units per liter (U/L). The normal range ...