Diagnosis and Treatment Archive
Abnormal ALT
 
What is an ALT test?

ALT or alanine aminotransferase is an enzyme that naturally occurs in the blood. The amount of ALT in the blood is measured by a blood test.

ALT Test Overview

This source begins with a simple overview that defines AST. For more information on the test and how it is performed, click the Next>> link at the bottom of the page.

 

What does it mean to have abnormal ALT?

Click here for information on normal ALT values and what abnormal results may indicate.

ALT is tested as part of a routine liver panel, which also includes:

 

Possible causes/diagnosis:

Possible causes include: