Liver
AST
An enzyme found in the liver, muscles, and other tissues.
livermusclemetabolismprotein
About this biomarker
AST, or aspartate aminotransferase, is an enzyme present in several tissues, including the liver and muscles. It is usually interpreted with ALT and other markers.
Why it matters
It helps add context when evaluating liver or muscle-related patterns.
What lower levels may suggest
Low AST is usually not clinically meaningful on its own.
What higher levels may suggest
High AST may be seen with liver injury, muscle injury, alcohol-related liver disease, or other conditions.
Common tests
Comprehensive metabolic panel, hepatic function panel, liver enzyme testing
Related biomarkers
Your trend
Loading your results…