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Routine serum B12 measurement is not useful once on injection therapy
International Journal of Laboratory Hematology, 31: 18
In cells, this vitamin functions as a cofactor for two vital enzymatic reactions: (1) methionine synthase, i.e
Good dietary sources include: Vitamin B2: dairy, eggs, lean meats, fish, and leafy greens Vitamin B12: meat, fish, poultry, eggs, and dairy (plant-based eaters may want to pay particular attention, as B12 is found almost exclusively in animal foods) Keeping alcohol in check is also worth considering
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