Collect	Grey (potassium oxalate/sodium fluoride)
	Transport	Refrigerated
	Minimum Volume	0.5 mL Plasma
	Remarks	4 tubes required. Draw fasting specimen, administer glucose drink, draw the second tube 1 hour after completion of glucose drink, draw the third tube 2 hours after glucose drink, draw the fourth tube 3 hours after glucose drink. Label time of collection.
	Notes	Patient must be fasting. This test should be performed using a 100g glucose load.

82951 *The CPT codes provided are based on the AMA guidelines and for informational purposes