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Key Takeaways Vitamin B12 is vital for neurological function and DNA synthesis
But these are all classic red flags that your body is running on empty
Several laboratory tests should be performed prior to treatment with cyanocobalamin, including serum vitamin B12, folate, iron, hematocrit, and reticulocyte count
What is the relationship between Vitamin B12 deficiency and shortness of breath
If the deficiency is due to an underlying condition, they may require ongoing shots
Don't let the needle touch anything once the cap is off
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