When such damage occurs, ALT is released from the liver cells in
to the bloodstream, often before jaundice appears, resultin
abnormally high serum levels that may not return to normal
for days or weeks.
The purpose of this blood
serum test is to help detect and evaluate treatment of acute hepatic disease, especially hepatitis, and cirrhosis without jaundice. To help distin
guish between myocardial (heart) and liver tissue damage (used with the AST enzyme test).