title: MMA test to detect vitamin B12 deficiency.
authors.forename: E J
authors.initials: EJ
authors.lastname: Norman
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008764:Methylmalonic Acid / Q000652:urine*; D012680:Sensitivity and Specificity; D014806:Vitamin B 12 Deficiency / Q000652:urine*
chemical_list: D008764:Methylmalonic Acid