Acronym

AST

Aspartate aminotransferase

An enzyme found in liver, muscle and other tissues.

What it means

An enzyme found in liver, muscle and other tissues.

Clinical context

AST is commonly used in Liver function tests, Laboratory medicine. The exact meaning can depend on specialty, region and local documentation practice.

Learning note

Use the full term when clarity matters, especially in formal assignments, prescriptions, handover and patient-facing communication.