← Marker Library

AST (Liver)

AST is an enzyme found in several tissues and commonly reported with ALT. A result by itself cannot distinguish its source.

SomaZeus display band

For care decisions, use the interval printed by the reporting lab and ask your clinician. Labs, assay methods, and individual context vary; the numbers below are SomaZeus display guidance.

Watch points

  • Watch point 1: at or above 200 U/L
  • Watch point 2: at or above 100 U/L
  • Watch point 3: at or above 60 U/L

SomaZeus uses the same watch points for men and women in this display.

Why hard-training athletes watch it

Recent exercise may affect AST, but an unexpected result should not be attributed to training without clinician interpretation and the rest of the panel.

When to retest

If your clinician recommends a repeat, ask how to prepare and whether timing relative to training matters for comparison.

Talk to your clinician

Review an unexpected or persistent result with your clinician alongside ALT, symptoms, recent activity, and the reporting lab interval.

Related reading

SomaZeus charts ast (liver) over time and keeps weight and nutrition logs in the same dated record, so you can review context beside the result. Get your first read →

Source: NIH MedlinePlus