Liver
ALT
A liver enzyme. Upper-normal values can still reflect fatty change. Higher results are the ones to watch. A common adult reference interval is 7–45 U/L.
Typical adult range
- Reference interval
- 7–45 U/L
- Often-cited tighter window
- 10–26 U/L
Liver enzyme; upper-normal can still signal fatty liver. Your own lab's printed range is the one that applies to your result.
These are commonly described physiological relationships, shared for education. They are not a diagnosis and cannot account for your medications, history, or symptoms — discuss your results with a licensed clinician.
Watching ALT over time?
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