Collect	Royal Blue (K2EDTA)
	Transport	Room Temperature
	Minimum Volume	7 mL Whole Blood
	Notes	Elevated results from noncertified trace element-free tubes may be due to contamination.  Elevated concentrations of trace elements in serum should be confirmed with a second specimen collected in a trace element-free tube, such as navy/royal blue sterile tube (no additive).

82172 *The CPT codes provided are based on the AMA guidelines and for informational purposes