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If the patient is suspected to be sensitive to cobalt or other components of cobalamin, an intradermal test dose is recommended (10, 13)
Vitamin B12 is one of the 8 B vitamins that is an essential nutrient for proper bodily functions
B12 is primarily found in animal-based foods such as meat, dairy, and eggs, and is absorbed in the small intestine after binding to a protein
Risk mitigation
it requires a deep understanding of internal medicine
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