|Values are valid only on day of printing.|
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.
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)