ALT in Serum

Highly liver-specific transaminase, but with minor contributions from skeletal and cardiac muscle, pancreas, and gut.

Also known as:

Alanine Aminotransferase

S-ALT

SGPT

ALT ranges for

Interpret your result

"Normal" lab range for ALT is between 12 and 48 IU/L for males:

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

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

Optimal range

Optimal range for ALT appears to be between 10 and 26 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.

Get the Full Picture of Your Liver Health

Comprehensive liver function test interpretation tool that automatically calculates key liver health indexes and provides recommendations based on official clinical guidelines.

View Full Analysis

100% free and private. Enter only the values you have.

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.