22,23 In patients with a normal or low-normal serum vitamin B 12 level, complete blood count results demonstrating macrocytosis, or suspected clinical manifestations, a serum methylmalonic acid level is an appropriate next step 1,2,6,18 and is a more direct measure of vitamin B 12 's physiologic activity
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The content is not intended to encourage application, diagnosis, or self-treatment of unlicensed individuals, and should not be used as a substitute for the clinical judgment of a qualified healthcare provider.
this compound remains investigational
Common Sources and Recommended Intake Vitamin B12 is found in animal products like meat, fish, and eggs
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