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Incidentally, the healthy reference range is 191-663 pg/ml and correlates closely with oral cobalamin intake, which is why the vitamin B12 blood level alone is not an adequate parameter to diagnose a deficiency (Herrmann and Obeid, 2014)
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Two, people with genuine B12 deficiency are, after withdrawal, at risk of developing worse symptoms, which may even persist after resuming treatment
Kidney function tests, such as serum creatinine and blood urea nitrogen (BUN), may be necessary, particularly in individuals with pre-existing kidney issues
Helps Prevent Heart Disease Homocysteine levels have been found as a independent risk for heart disease
Key nutrients that support energy production, fat metabolism, and liver health
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