Ordering Recommendation

This test is used to evaluate and monitor methylmalonic acidemia.

Mnemonic
MMA METD
Methodology

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Plain red or serum separator tube. Also acceptable: Green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA).

Specimen Preparation

Centrifuge and remove serum or plasma from cells within 2 hours of collection. Immediately transfer 2 mL serum or plasma to an ARUP Standard Transport Tube and
refrigerate or freeze. (Min: 1 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Room temperature specimens. Grossly hemolyzed or lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 1 month

Reference Interval

Effective July 18, 2011

0.00-0.40 µmol/L

Interpretive Data



Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

83921

Components
Component Test Code* Component Chart Name LOINC
2005256 MMA Serum/Plasma, Metabolic Disorder 13964-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • MMA (Methylmalonic Acid, Serum or Plasma (Metabolic Disorders))
Methylmalonic Acid, Serum or Plasma (Metabolic Disorders)