| Ordering Code | 180 |
|---|---|
| Test Name | 3 Hr Glucose Tolerance |
| Alias | 3 Hour GTT |
| Preferred Specimen | Serum Note: If specimen cannot be properly processed within 1 hour of collection, collect blood in Oxalate/Fluoride (Gray). |
| Preferred Container | 2 SS (Serum/Separator - Red/Grey or Gold) |
| Optimum Volume | 1 mL |
| Collection Instructions | If specimen cannot be properly processed within 1 hour of collection, collect blood in Sodium Fluoride-Potassium Oxalate (Gray) All specimen types must be centrifuged within 2 hours of collection. If no gel separation present in tube and testing is delayed, plasma/serum is aliquoted from cells within 2 hours of collection. |
| Handling Instructions | Requires pathologist approval Draw a fasting blood sugar before administering 75 gram glucose, and draw blood at one, two, and three hour intervals Label each tube with patient's name, secondary identifier, and collection time interval (i.e. gasting, one-hour, two-hour, and three-hour). |
| Transport Requirements | Oahu: Refrigerated Airline: Frozen |
| Specimen Stability | Refrigerated: 3 Days Frozen: 3 Months (Aliquot) Frozen samples should be thawed only once Unprocessed Sodium Fluoride-Potassium Oxalate (Gray) blood is stable 3 days ambient. |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
