Collect	Green (Sodium Heparin)
	Also Acceptable	Green (Lithium Heparin), Lavender (EDTA)
	Transport	Frozen
	Minimum Volume	4.0 mL Oxalic Acid - Preserved Plama
	Remarks	Special collection tubes are available through Client Services. Centrifuge immediately. Must be spun and poured into Oxalic Acid tube within 1 hour of collection.
	Notes	CRITICAL FROZEN. Separate samples must be submitted when multiple tests are ordered. The oxalic acid preservative may interfere with other tests. Fasting samples are preferred. Follow transport instructions carefully.

82180 *The CPT codes provided are based on the AMA guidelines and for informational purposes