Glucose Tolerance Test-Additional Specimens
| Order Code: | GT05 |
| Order Form: | Laboratory Requisition |
Specimen:
Plasma
Collection Medium:
 |
| Gray top tube (Fluoride) |
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood for extra specimen (added to GTT series)
Testing
Schedule:
24 hrs/day, 7 days a week, including holidays.
Analytic Time:
1 hour (upon receipt in laboratory)
Comments:
CPT code = 82952
Test
Limitations:
Icterus: No significant interference up to an I index of 60
(approximate conjugated and unconjugated bilirubin concentration: 60
mg/dL).
Hemolysis: No significant interference up to an H index of 1000
(approximate hemoglobin concentration 1000 mg/dL).
Lipemia (Intralipid): No significant interference up to an L index of
1000 (approximate triglycerides concentration 2000 mg/dL). There is
poor correlation between turbidity and triglycerides
concentration.
Methodology:
Hexokinase/UV Test
Sample
Processing:
Centrifuge at 3000 RPM for 10 minutes.
Centrifuge within one hour of draw time.
Label transport tube with two patient identifiers, date and time of collection.
Centrifuge within one hour of draw time.
Label transport tube with two patient identifiers, date and time of collection.
Sample
Storage:
Refrigerate.
Transport
Instructions:
Transport in cooler with refrigerated coolant packs.
Place requisition into outside pocket of bag.
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Place specimen into zip-lock type bag, seal bag.
CPT Code:
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