| CLINICAL CHEMISTRY | ||
| Other Test Name | : | – Oral Glucose Tolerance Test – Glucose Tolerance Test – GTT |
| Special Instructions : | : | – 6-8 hours fasting. – Obtain fasting blood sample then collect blood samples 1 hour and 2 hour after consuming the entire glucose solution depending on test request. – Note: Fbs, 1st or 2nd hour sample collection is based on the time the glucose solution is consumed – Patient is required to consume the entire amount of the specially-formulated glucose solution within a 5-minute period. |
| Specimen Requirements | : | Specimen: Serum Volume: 3mL Minimum Volume: 1mL Container: Red or Gold tube |
| Causes for Rejection | : | – Quantity not sufficient – Improper collection tube used – Improperly labeled specimen |
| Stability Requirements | : | Room Temperature: 8 hours (not hemolyzed) Refrigerated: 72 hours (3 days) |
| Use | : | – Screening test for Diabetes Mellitus. |
| Methodology : | : | – Hexokinase |
