| Ordering Code | 179 |
|---|---|
| Test Name | 2 Hour Glucose Tolerance |
| Alias | 2 Hour GTT Blood Glucose for 2 Hr 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 | Draw a fasting blood sugar before administering 75-gram glucose, and draw blood after two hours. Label each tube with patient's name, secondary identifier, and collection time interval (i.e fasting and two-hour). |
| Handling Instructions | If specimen cannot be properly processes 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. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated International: 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 |
