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HelpTest Code AST Aspartate Aminotransferase (AST)
Additional Codes
| EPIC | LAB4018 |
Synonyms
- SGOT
- Aspartate Transaminase
Clinical Significance
Aspartate aminotransferase measurements are used in the diagnosis and treatment of certain types of liver and heart disease.
Source: Beckman Coulter Unicel, AST IFU. REF #442665, #476831 12/22/15
Methodology
Enzymatic rate method (Beckman Coulter UniCel DxC 660i)
Sample Type
| Preferred Sample Type | |
|---|---|
| Light green top - Plasma | |
| Acceptable Sample Type(s) | |
|---|---|
| Dark green top - Plasma | |
| Yellow top - Serum | |
| Red top - Serum | |
Centrifuge: Yes
Specimen Minimum Volume
0.3 mL
Specimen Stability
| Temperature | Time |
|---|---|
| Ambient (18-25°C) | 8 hours |
| Refrigerated (2-8°C) (store) | 48 hours |
| Frozen (-15 to -20°C) | 1 month |
Separate plasma or serum from cells within 2 hours.
Reference Ranges
| Normal Range | |
|---|---|
| >1 Month Old | 16 - 74 IU/L |
| <1 Month Old | 10 - 42 IU/L |
| Technical Range |
|---|
| 5 - 2,600 IU/L |
Rejection Criteria
| Hemolysis | 1+ or greater reject |
|---|---|
| Icteric | N/A |
| Lipemia | 4+ or greater ultracentrifuge |
Availability
| Performed | STAT |
|---|---|
| 24/7 | Yes |
Performing Laboratory
MultiCare Yakima Memorial Hospital Laboratory
Lab Department
Chemistry
CPT Code
84450
LOINC
1920-8 AST [Catalytic activity/Vol]