Liver
AST
A liver and muscle enzyme, read next to ALT. Higher results are the ones to watch. A common adult reference interval is 8–40 U/L.
Typical adult range
- Reference interval
- 8–40 U/L
- Often-cited tighter window
- 12–26 U/L
Liver/muscle enzyme. 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 AST over time?
Dose Compass charts each draw, flags meaningful moves, and helps you prepare questions for your clinician.
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