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Causes of High B12 Levels in Blood Underlying disease If your test shows excessive B12 levels and you are not taking any supplements , it may point to an underlying medical problem
(No studies have tested it in people with normal blood sugar.) But none of the studies are what you could call high-quality research
Cover Image Illustration by: The Optimal Medical Group
There was no need to evaluate the inconsistency between the direct (any class of drugs vs another class) and indirect (any class of drugs vs placebo) effects in the network meta-analysis, as there was no trial that compared any two classes in all the trials
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