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"Hypervitaminemia B12 in the Elderly: A Forgotten Marker of Serious Underlying Diseases"

Understanding Your B12 Blood Test Results When you receive your B12 blood test results, the report will typically show your measured level alongside the laboratory's reference range

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[6] If you belong to any of these groups and experience symptoms of B12 deficiency, you may need to consult your doctor about taking a blood test
