| Ordering Code | 172 |
|---|---|
| Test Name | Gamma GT |
| Alias | Gamma Glutamyltransferase GGTP GGT Gamma-Glutamyl Transpeptidase Gamma-GT |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Serum in Plain (Red), Plasma in EDTA (Lavender) |
| Optimum Volume | 1 mL |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Refrigerated: 1 Month Frozen: 1 Year (Aliquot) Frozen samples should be thawed once. |
| Rejection Criteria | Grossly hemolyzed, Insufficient quantity, Specimen older than stability limits |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | Glutamyl-carboxy-p-nitroanilide |
Reference range(s)
The reference ranges listed below are valid on this date of August 15, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Gamma GT | ALL | 9-64 | 9-64 | U/L |