CHROMIUM, SERUM
Reporting Title: Chromium, S
Dynamic Reaction Cell-Inductively Coupled-Mass Spectrometry (DRC-ICP-MS)
	Test Performed At:
		Mayo Medical Laboratories #8638
	Specimen Required:
		Collect 3.0 mL (minimum 1.2 mL) of whole blood in a plain royal blue-top Monoject® trace element blood collection tube (no additive).
	Laboratory Notes:
		1.	Allow the specimen to clot for 30 minutes; then centrifuge the specimen to separate serum from the cellular fraction.
		2.	Remove the stopper and carefully pour 1.0 mL (0.5 mL minimum) serum into a 7.0 mL Mayo metal free, screw-capped polypropylene vial (Supply T173), avoiding transfer of the cellular components of blood. DO NOT insert a pipet into the serum to accomplish transfer, and DO NOT ream the specimen with a wooden stick to assist with serum transfer.
		3.	Send specimen refrigerated. All specimens to be stored more than 48 hours should be sent frozen.
		4.	It is important that the specimen be obtained, processed, and transported according to instructions on “Metals Analysis — Collection and Transport.”
		5.	DO NOT LEAVE SERUM ON CELLS MORE THAN 60 MINUTES.
		NOTE:		Reject due to gross hemolysis (slight okay)
	Reference Values:
		<0.3 ngm/L
		When collected by a phlebotomist experienced in ultra-clean collection technique and handled according to the instructions on “Metals Analysis — Collection and Transport”, we have observed the normal concentration of chromium in serum to be <0.3 ng/mL. However, the majority of specimens submitted for analysis from normal, unexposed individuals contain 0.3-0.9 ng/mL of chromium. Commercial evacuated blood collection tubes yield serum containing 2.0-5.0 ng/mL chromium.
	Day(s) Test Set Up:
		Tuesday, Friday
	Cut-Off Time:
	Turn Around Time:
		3-7 days
	CPT Code:
		82495
	Care Manager Order Name:
		Miscellaneous Referral Test ONCE RTN
	Cerner Order Name:
		Misc Referral

Last Updated 11/08