MMA
7 days (15 days for repeat testing)
Liquid Chromatography with Tandem Mass Spectrometry (LC-MS/MS)
Accredited NRL Laboratory
Monday to Friday
Measures the concentration of methylmalonic acid (MMA) in the blood or urine. Elevated levels are a sensitive indicator of vitamin B12 (cobalamin) deficiency and certain inborn errors of metabolism (e.g., methylmalonic acidemia).
Serum or Plasma
1 mL
Serum (Red-top tube, gel-barrier tube) or Plasma heparin anticoagulant (green-top)
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 7 days |
| Refrigerated | 180 days |
| Frozen | 360 days |