Clinical Indications Evaluating patients with methylmalonic aciduria or a cobalamin defect.
Reference Range See report
Sample Required Heparin (green top) on ice rush to laboratory
Sample Volume 0.5 mL
Turnaround Time Up to 6 weeks
Notes Not currently performed in house; this is a referred test.
It would rarely be necessary to perform this test in the initial investigation of an inherited metabolic disease. A urine organic acid profile would be the normal starting point.