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HelpTest Code AST Aspartate Aminotransferase (AST) (GOT), Serum
Reporting Name
Aspartate Aminotransferase (AST), SUseful For
Diagnosing and monitoring liver disease, particularly diseases resulting in a destruction of hepatocytes
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumNecessary 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.
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 30 days | ||
| Ambient | 7 days |
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
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 |
Report Available
Same day/1 to 2 daysReject Due To
| Gross hemolysis | Reject |
Method Name
Photometric Rate, L-Aspartate with Pyridoxyl-5-Phosphate
Day(s) Performed
Monday through Sunday