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Description
And the benefits go far beyond just addressing deficiencies
Where serum B12 results are borderline or do not fit the clinical picture, further tests such as active B12 (holotranscobalamin), methylmalonic acid, or homocysteine may be helpful
Whether it's due to dietary choices, digestive issues, or simply getting older, B12 deficiency is more common than you might think
doi:10.1136/practneurol-2014-001071
2022;219(4):e20211387
