methylmalonic acid MMA 24h urine

Selected indexed studies

• Vitamin B-12 Intake from Dairy but Not Meat Is Associated with Decreased Risk of Low Vitamin B-12 Status and Deficiency in Older Adults from Quebec, Canada. (J Nutr, 2022) [PMID:36774114]
• 4-ethylphenyl-cobalamin impairs tissue uptake of vitamin B12 and causes vitamin B12 deficiency in mice. (PLoS One, 2013) [PMID:24073261]

_Worker-drafted node — pending editorial review._