Methylmalonic Acid, Serum
Test:
147
CPT:
83921
Synonyms
Special Instructions
Expected Turnaround Time
3 – 6 days
Specimen Requirements
Specimen
3 – 6 days
Volume
2 mL
Minimum Volume
0.6 mL (Note: This volume does not allow for repeat testing.)
Container
Red-top tube, gel-barrier tube, or green-top (heparin) tube
Collection
Separate serum or plasma from cells within one hour of collection.
Storage Instructions
Refrigerate
Causes for Rejection
Plasma from a light blue-top or yellow-top tube; citrate interferes with assay
Test Details
Use
Serum methylmalonic acid (MMA) measurement is used to evaluate individuals with signs and symptoms associated with vitamin B12 deficiency1-7 or congenital methylmalonic academia.8,9