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Importantly, functional B12 deficiency can sometimes coexist with high total B12 levels, especially in kidney disease, and may require additional testing with methylmalonic acid (MMA) or holotranscobalamin if deficiency is suspected clinically
With most of the preliminary details mentioned here, you are now more informed and can be more involved in the treatment process by asking the right questions
In addition to excessive intake of dietary supplements, parenteral administration of vitamin B12 may be another cause of excess, which is likely associated with an immune system response to produce anti-TC II antibodies
Thats because there is no set formula for what is in these injections
"Dietary source of vitamin B(12) intake and vitamin B(12) status in female elderly Koreans aged 85 and older living in rural area"
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