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Methylmalonic Acid, Serum or Plasma (Vitamin B12 Status)

CPT Code(s): 83921
Specimen Required: Patient Preparation:
Collect:Plain red or serum separator tube. Also acceptable: Green (sodium heparin), green (lithium heparin), lavender (EDTA), or pink (K2EDTA).
Specimen Preparation:Centrifuge and remove serum or plasma from cells within 2 hours of collection. Transfer 1.2 mL serum or plasma to an RDL Standard Transport Tube and refrigerate or freeze immediately. (Min: 0.6 mL)
Storage/Transport Temperature:Frozen.
Stability:After separation from cells: Ambient: Unacceptable; Refrigerated: 4 days; Frozen: 1 month
New York DOH Approval Status: This test is New York DOH approved.
Aliases:
  • Cobalamin Deficiency (Methylmalonic Acid, Serum or Plasma (Vitamin B12 Deficiency)Methylmalonate (Methylmalonic Acid, Serum or Plasma (Vitamin B12 Deficiency)MMA (Methylmalonic Acid, Serum or Plasma (Vitamin B12 Deficiency))Vitamin B12 Deficiency (Methylmalonic Acid, Serum or Plasma (Vitamin B12 Deficiency))
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