The 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.*

Your Vitamin B12 test results are reported in specific units. The units are mmol MMA/mol creatinine (cr). Optimal vitamin B12 status is indicated when the result is below 2.0 mmol MMA/mol cr.* A result above 3.8 mmol/mol cr means B12 status is very low and should be confirmed with further testing.*