METHYLMALONIC ACID
Liquid Chromatography –Tandem Mass Spectometry (LC-MS/MS) Stable Isotope Dilution Analysis
	Test Performed At:
		Mayo Medical Laboratories #80289
	Specimen Required:
		Collect 4.0 mL (minimum 1.5 mL) of whole blood in a plain, red-top tube(s) or serum gel tube(s). Green-top (heparin) or lavender-top (EDTA) tube(s) are also acceptable.
	Laboratory Notes:
		Spin, separate and send 2.0 mL (0.7 mL minimum) serum or plasma (heparin or EDTA) frozen in a plastic vial.
		NOTE:	DO NOT freeze/thaw specimen.
	Reference Values:
		Serum <0.40 micmol/L
	Day(s) Test Set Up:
		Monday-Friday; continuous until noon
	Cut-Off Time:
	Turn Around Time:
		4-6 days
	CPT Code:
		83921
	Care Manager Order Name:
		Methylmalonic Acid, Serum ONCE RTN
	KIDDOS Order Name:
		Methylmalonic Acid
	Cerner Order Name:
		Methylmalon Acd

Last Updated 10/08