Laboratory Services
Glucose Tolerance, 3 hr
Print this pageUpdated Test Information:
| Test Description |
Glucose Tolerance, 3 hr
|
|
|---|---|---|
| Test ID |
GTT3H
|
|
| Specimen Type |
Serum |
|
| Specimen Requirements |
GTT 1H |
|
| Alternate Specimen Type |
Red, Li-heparin plasma, K2EDTA, NaF/Na2EDTA, KF/Na2EDTA, NaF/K‑Oxalate, SST |
|
| Specimen Collection / Processing Instructions |
GTT 3H - Administer 100 g glucola. Do not mix with water unless directions on product label indicate to do so. The patient needs to be fasting for this tolerance test. During the test period, the patient should remain inactive and receive nothing by mouth including nicotine products. Small sips of water or ice is permissible. Draw 4 specimens. One at fasting, 1 hour, 2 hour, and 3 hour. |
|
| Minimum Sample Volume |
1 mL |
|
| Pediatric Min. Volume (if applicable) |
500 uL |
|
| Additional Processing Details |
Plasma or serum samples without preservative (NaF) should be separated from the cells or clot within half an hour of being drawn. |
|
| Stability |
8 hours at 15-25˚C |
|
| Methodology |
UV Enzymatic |
|
| Estimated TAT |
0-2 days |
|
| Testing Schedule |
Monday-Saturday |
|
| CPT Code(s) |
82951 |
|
| Performing Lab |
Incyte Diagnostics |
|
| LOINC Code(s) |
20437-0 |
