Aspartate Aminotransferase
AST, SGOT
Testing Information
Sample Type
Serum
Test Codes
630060
CPT Code
84450
Testing Area
Core Lab - Chemistry
Test Methodology
Abbott Alinity - Enzymatic
Reference Range
<35 U/LCritical Value: ≥2000 U/L
Expected Turnaround Time
Results Available 24 hours from Receipt at the laboratory.
Specimen Collection Criteria
Collect one gold top SST tube (minimum whole blood: 4 mL). Let specimen clot for 30-60 minutes and then centrifuge to separate serum from cells. Refrigerate after centrifugation.
Rejection Criteria
Grossly hemolyzed specimens, quantity not sufficient, improperly labeled
Specimen Validity and Retention
Centrifuged SST Tubes:Room Temperature (20-25°C): 4 daysRefrigerated (2-8°C): 7 daysFrozen (-20°C or greater): UnacceptableSerum Aliquots:Room Temperature (20-25°C): 4 daysRefrigerated (2-8°C): 7 daysFrozen (-20°C or greater): 7 daysSpecimens retained for 7 days after testing
Courier Transportation
Transport centrifuged tube refrigerated (2-8°C)
Clinical Utility
Aspartate Aminotransferase is a commonly assessed analyte for hepatic function and liver disease.
