ALT
Alanine transaminase (ALT) is an enzyme mainly found in the liver, though it exists in other parts of the body.
Why it matters: ALT levels in the blood can increase when the liver is damaged, so the test is used to help assess liver health. A raised result does not by itself mean a severe liver condition.
Source · Cleveland Clinic — what it is, why it matters, what moves it, related conditions
May increase with:
May decrease with:
What is ALT?
Alanine transaminase (ALT) is an enzyme mainly found in the liver, though it exists in other parts of the body.
What might a high or low ALT mean?
ALT levels in the blood can increase when the liver is damaged, so the test is used to help assess liver health. A raised result does not by itself mean a severe liver condition.
What is the typical reference range for ALT?
The general-population reference range shown here is < 45 U/L. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect ALT?
It may be higher with: Alcohol-induced liver injury, Fatty liver disease, Hepatitis, Cirrhosis, Liver tumors, Hemochromatosis, Mononucleosis, Some medicines. It may be lower with: Vitamin B6 deficiency, Chronic kidney disease.