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Aspartate Aminotransferase (AST) details

What Aspartate Aminotransferase (AST) shows

Aspartate aminotransferase (AST) is an enzyme found in the liver, heart, skeletal muscle, and several other tissues, and it's released into the bloodstream when any of these tissues are damaged. It's one of the two standard liver enzymes (along with ALT) checked in liver panels, but because it's less liver-specific than ALT โ€” meaning muscle or heart damage can also raise it โ€” an elevated AST is usually interpreted together with ALT. When AST is elevated more than ALT, it can suggest alcohol-related liver damage, muscle injury, or a cardiac cause rather than a primarily liver-driven process; when ALT is higher, a liver cause is more likely. AST is also part of some heart-related panels, though it's largely been replaced there by more specific cardiac markers like troponin.

Normal ranges

Typical adult range

10โ€“35 IU/L

Most labs report a range close to this

Hormunity optimal range

10โ€“26 IU/L

A narrower functional target

Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.

Tests that include Aspartate Aminotransferase (AST)

Labcorp Not offered
Quest Not offered
Quest Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
Quest Not offered
Labcorp Not offered
Labcorp Not offered
Labcorp Not offered
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