The normal range of values (meaning the values between which levels are normal) are: ALT: Between 4 and 36 U/L AST: Between 8 and 33 U/L The high end of the reference range is referred to as the ...

When to Worry About ALT Levels A high level of ALT could mean you have liver damage ... This panel also includes an aspartate aminotransferase (AST) test. AST is another liver enzyme.