[Lighthouse Lady]

ALT was listed as one of the tests done on donated blood from the list I gave in a previous post. It is a liver enzyme test which you can read more about http://www.medicinenet.com/Liver_Blood_Tests/article.htm here. There is more accurate testing now but blood banks still use the ALT in addition to the others.
LL

[neverdem]

Thanks for the link, but I know the usual meaning of ALT already, i.e. alanine aminotransferase, which is an enzyme most commonly associated with liver pathology.

The reason I asked the question in comment# 80 was because ALT was in the middle of a list of infectious diseases in comment# 79.

I thought maybe there was a new abbreviation of ALT that I didn't know yet.

Checking the concentration of ALT is used as a screening test. When it's sufficiently elevated, then they will test for various antibodies to the Hepatitis B virus(HBV) and the Hepatitis C virus(HCV).

ALT is a crude indicator of liver pathology. It can be elevated due to other causes of hepatitis or other causes of liver pathology.