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A required screening is completed before your first treatment begins
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
Some people do bi-weekly
Some people feel better after a Vitamin B12 shot, especially if fatigue, weakness, or neurologic symptoms were related to deficiency
Additionally, it plays a key role in nerve function and the production of DNA and red blood cells
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