Glucose, Fasting and Postprandial, 2-Hour
What it measures
- Glucose, PlasmaLOINC 1558-6
- Glucose, Postprandial/ 2 HourLOINC 1521-4
Before the visit
Fasting required
Fasting required. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.
Specimen
- Specimen
- Two - 1 mL plasma specimens collected in fluoride/oxalate (gray-top) tubes
- Minimum volume
- 0.5 mL each specimen
- Also accepted
- Plasma from fluoride/oxalate (gray-top) tube in a plastic screw-cap vial • Serum (separated from cells immediately) in a plastic screw-cap vial • Spun SST • Plasma from lithium heparin (green-top) tube in a plastic screw-cap vial • Plasma from sodium heparin (green-top) tube in a plastic screw-cap vial
- Container
- Fluoride/oxalate (gray-top) tubes
- Temperature
- Room temperature
First specimen obtained fasting. Second specimen obtained 2 hours following a meal. Label each specimen with the specific draw time. Serum and plasma submissions must be separated from cells.
Billing
CPT 82947