| Analyzer |
|
| Abbrev |
GGT |
| Analyte |
Gamma-Glutamyltransferase |
| Department |
Chemistry-General |
| Specimen Type |
Serum |
| Alternate Specimen Type |
N/A |
| Specimen Stability Requirements |
Transport refrigerated within 7 days after collection (Stable 1 month refrigerated) |
| Preferred Specimen |
1mL Serum |
| Minimum Volume |
0.5mL |
| Collection Instructions |
Heavy alcohol consumption just prior to specimen collection and some antiepileptic drugs (phenytoin, barbiturates) may result in falsely elevated GGT values |
| Specimen Instructions |
Allow serum samples to clot completely before centrifugation. Serum gel tubes should be centrifuged within 2 hours of collection. Red-top tubes should be centrifuged and aliquoted to a plastic transport tube within 2 hours of collection. Avoid hemolysis. Gel tubes should be spun at room temperature at a speed of 1000 to 1300 RCF for 10 minutes in a swinging bucket centrifuge and 15 minutes in a fixed-angle centrifuge. Non-gel serum tubes can be centrifuged at ≤ 1300 RCF for 10 minutes. After centrifugation refrigerates the samples at 2 to 8°C. |
| Reasons for Rejection |
Improper labeling; quantity not sufficient for analysis; improper specimen type; expired stability; gross hemolysis. |
| CPT Code |
82977 |
