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Test Code AST Aspartate Aminotransferase (AST) (GOT), Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.5 mL

Submission Container/Tube: Plastic vial

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.


Useful For

Diagnosing and monitoring liver disease, particularly diseases resulting in a destruction of hepatocytes

Method Name

Photometric Rate, L-Aspartate with Pyridoxyl-5-Phosphate

Reporting Name

Aspartate Aminotransferase (AST), S

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  30 days
  Ambient  7 days

Reject Due To

Gross hemolysis Reject

Reference Values

Males

0-11 months: not established

1-13 years: 8-60 U/L

≥14 years: 8-48 U/L

Females

0-11 months: not established

1-13 years: 8-50 U/L

≥14 years: 8-43 U/L

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84450

LOINC Code Information

Test ID Test Order Name Order LOINC Value
AST Aspartate Aminotransferase (AST), S 30239-8

 

Result ID Test Result Name Result LOINC Value
AST Aspartate Aminotransferase (AST), S 30239-8

Forms

If not ordering electronically, complete, print, and send a Kidney Transplant Test Request with the specimen.