Methylmalonic Acid Test (uMMA) A B12 Status Marker
The Vitamin B12 test measures a substance called methylmalonic acid (MMA) in the urine, which is a specific indicator of low B12 status. The more MMA you have, the more likely you are to be low in this critical nutrient.
Vitamin B12 (cobalamin)
Mass Spectrometry, Chemistry
- Methylmalonic acid (uMMA)
- Creatinine (Urine)