AST in Serum

Transaminase released from hepatocytes and cardiac/skeletal muscle (with minor contributions from kidney, pancreas, brain, RBCs and gallbladder).

Also known as:

Aspartate Aminotransferase

S-AST

AST ranges for

Interpret your result

"Normal" lab range for AST is between 10 and 50 IU/L for males:

According to Peter Attia, AST should be below 25 IU/L for males:

According to OptimalDX, AST should be between 10 and 26 IU/L:

Optimal range

Optimal range for AST appears to be between 10 and 25 IU/L:

This isn't medical advice. Consult your healthcare provider.

This page is marked as a work-in-progress.

The optimal range is derived from a limited number of sources and is subject to change.

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About the site author
My personal mission is to extend human lifespan by collectively adding 1 million years to people's lives.
Zsolt Szabo
Software Engineer, Biohacker, and Consultant for Longevity Clinics.

Please send me relevant research and feedback.

Any feedback is welcome at .

I am particularly interested in research on biomarkers associated with all-cause mortality and on defining optimal reference ranges.