Glucose Tolerance Test, Postprandial, 2-Hour

What it measures

• Glucose, Postprandial/ 2 HourLOINC 1521-4

Specimen

Specimen

1 mL plasma collected in a fluoride/oxalate (gray-top) tube

Minimum volume

0.5 mL

Also accepted

Plasma from fluoride/oxalate (gray-top), lithium heparin (green-top) or sodium heparin (green-top) tube in a plastic screw-cap vial • Serum (separated from cells immediately) in a plastic screw-cap vial • Spun SST

Container

Fluoride/oxalate (gray-top) tube

Temperature

Room temperature

Specimen is obtained 2 hours following a meal. Serum and plasma submissions must be separated from cells.

Billing

CPT 82947