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METAC / MMAS-M
METHYLMALONIC ACID (MMA), QUANTITATIVE, SERUM

Test Code METAC / MMAS-M 
Test METHYLMALONIC ACID (MMA), QUANTITATIVE, SERUM 
Methodology Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS) Stable Isotope Dilution Analysis 
Description Useful for evaluating children with signs and symptoms of methylmalonic acidemia and for screening for the differential diagnosis of signs and symptoms associated with a variety of causes of cobalamin deficiency. 
Specimen Draw blood in a plain red-top or serum gel tube from a fasting patient. Spin down and send 1.5 mL (minimum: 0.8 mL) of serum refrigerated in a plastic vial. 
Reference Values <= 0.40 Ámol/L 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 83921