Re: What does a low ALT level mean?
Low ALT is normal.
ALT and AST are liver enzyme tests, usually done together. High levels mean the liver is irritated by something, that "something" could be temporary (like taking too much Tylenol) or something longterm and more serious like liver disease.
Elevated levels usually warrant a second round of ALT/AST blood tests taken a month or more after the first to see if the levels return to normal on their own.
Last edited by AuntieLeela; 02-11-2009 at 08:59 PM.