A member asked:

What is the normal range of alt in the blood ?

A doctor has provided 1 answer

Units per liter: The top of the reference range is set at around 40 u/l for most labs, but this should not be confused with a 'healthy range'. Most folks are well-below, and ethnicity and heredity may affect what is right for a person. The key is to know what to do with a number. The higher a person is above reference range, the more worrisome.

Answered 3/23/2014

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