C4 (FOURTH COMPONENT OF COMPLEMENT), BLOOD
Immunoturbidimetric Assay
	Test Performed At:
		St. Louis Children’s Hospital
	Specimen Required:
		Draw 2.0 mL of whole blood in a green-top (lithium heparin) tube(s); SST® (Serum Separator Tube) or a plain, red-top tube(s); send to lab.
	Laboratory Notes:
		Spin and separate.
	Reference Values:
		12-54 mg/dL
	Day(s) Test Set Up:
		Monday - Sunday
	Cut-Off Time:
		N/A
	Turn Around Time:
		Same day
	CPT Code:
		86160
	Care Manager Order Name:
		Complement, C4 ONCE RTN
	Cerner Order Name:
		Comp C4

Last Updated 03/07