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More on this: Vegan and vegetarian sources of B12 To diagnose a vitamin B12 deficiency, doctors A doctor may order blood tests if they suspect a person has a vitamin B12 deficiency, including a complete blood count and tests to check levels of B12 and folate in the blood
Most people then feel either neutral or noticeably better as the deficiency corrects
Individual responses to compounds can vary, and potential interactions with medications, pre-existing conditions, or other supplements should be evaluated by a qualified professional
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