What Is an Alanine Aminotransferease (ALT) Test?

By
Peter Evans
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6How to Interpret ALT Test Results

The normal results for an ALT test can vary from lab to lab. In general, they should range from 29 to 33 IU/L for men and 19 to 25 IU/L for women. Certain factors may affect the range, such as age and sex. Therefore, make sure to discuss with your healthcare provider about the results.

Higher-than-normal results may suggest liver damage, which can be caused by cirrhosis, hepatitis, liver cancer, dead liver tissue, reduced blood flow to the liver, diabetes, mononucleosis, or hemochromatosis. Lower-than-normal results may suggest a healthy liver, but they may be linked to long-term mortality.  [6]

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