METHYLMALONIC ACID

Specimen Required
Draw blood in a SST tube. Centrifuge, separate and send 1.0 mL serum (0.5 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA
Serum: Red Top

Rejection Criteria
Hemolyzed or lipemic specimens

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: Unacceptable; Refrigerated: 4 days; Frozen: 14 days

Reference Range
<0.4 umol/L

Performed
Monday, Wednesday, Thursday, Friday

Turnaround Time4 days
Test CodeMMA01
CPT-4 Code (s)
83921
LOINC Codes
13964-2

Warde
Medical
Laboratory