MMAU - Overview: Methylmalonic Acid (MMA), Quantitative, Urine

Test Catalog

Test Name

Test ID: MMAU    
Methylmalonic Acid (MMA), Quantitative, Urine

Useful For Suggests clinical disorders or settings where the test may be helpful

Evaluating children with signs and symptoms of methylmalonic acidemia


Additional confirmatory testing must be performed


Evaluating individuals with signs and symptoms associated with a variety of causes of cobalamin deficiency


Several studies have suggested that the determination of serum or urinary methylmalonic acid could be a more reliable marker of cobalamin deficiency than direct cobalamin determination.

Method Name A short description of the method used to perform the test

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

Methylmalonic Acid, QN, U

Aliases Lists additional common names for a test, as an aid in searching

B12 Deficiency
Cobalamin Deficiency
Methylmalonic Acid (MMA)
MMA (Methylmalonic Acid)
Methylmalonic Aciduria