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Aspartate Aminotransferase

Test Code



Testing performed on DxC 700 AU analyzes with serum testing (Enzymatic).

Test Utility

Used in the diagnosis and management of certain types of liver disease. AST is no longer recommended for diagnosis of myocardial infarction.

Specimen Storage and Stability

AST in serum is stable for 1 day when stored at 15-25C, for 1 month when stored at 2-8C, and 1 year or more stored at -20C or colder.

Specimen Collection and Preparation

Allow SST specimens (Gold Top or Tiger, minimum 4.0mL) to clot 30 to 60 minutes then immediately centrifuge to separate serum from cells. Refrigerate at 2-8C or 36-46F.

Specimen Rejection

  • Improperly labeled

  • Specimen grossly

  • Hemolyzed uncentrifuged

Reference Ranges

13 - 39U/L


Monday - Saturday, 16 hours a day.

Result available after getting the specimen in 5 hours.

STAT results available within 2 hours of receipt in the Laboratory.

*NOTE: All Specimen Refrigerated (2-8°C) for 7 days only.


Vibra Health Laboratory

Phone: (248) 846-0663

1307 Allen Dr, Suite A, Troy, MI 48083

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