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Per official guidelines, sequence the condition that prompted the encounter as the principal diagnosis in the inpatient setting (typically PE if that was the principal reason for admission)
Elevated homocysteine and methylmalonic acid (MMA) are biomarkers of functional B12 insufficiency
That framing suggests dosing and side-effect management are meant to be an ongoing conversation with your provider, not a one-time decision locked in at intake
Cyanocobalamin contains a cyanide molecule instead of a methyl group, making it inactive and potentially harmful
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