BiomarkersAST (SGOT)

Liver

AST (SGOT)

An enzyme from the liver and muscles

On your report it may say: SGOT, Aspartate aminotransferase

AST is found in the liver and also in muscles and the heart. It's read with ALT to understand liver health.

Updated 2026-10-26

Typical ranges · U/L

In range below 40
Raised 40–120
High 120+

Hard exercise can raise AST for a few days.

Ranges vary by lab, age and sex. The range printed on your report applies.

If it's low

Low AST is normal.

Common causes

  • Normal

If it's high

Liver or muscle cells may be stressed.

Common causes

  • Fatty liver
  • Alcohol
  • Hepatitis
  • Recent intense exercise or muscle injury

What you might notice

  • Often none

Testing

Who should test
Part of liver function tests.
How to prepare
Avoid heavy exercise and alcohol for 24–48 hours.
When to retest
As your doctor advises.

What can help

SYNC doesn't recommend liver supplements from liver enzymes. Abnormal results need a doctor.

Food sources

Less alcoholHealthy weight

See a doctor about any raised result.

Common questions

Why compare AST and ALT?

The ratio helps doctors judge possible causes, such as alcohol.

Can a workout raise AST?

Yes, for a few days.

Explore further

Sources

  1. MedlinePlus (US National Library of Medicine): AST test
  2. MedlinePlus (US National Library of Medicine): Liver function tests

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For general education only, not medical advice. Ranges shown are typical for adults; the range printed on your lab report applies. Talk to a qualified doctor about your results.