b12 injection cpt code 2021 Cyanocobalamin (B12) / Products / American Regent B12 Injection HOMEKIT
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**Maintenance Dose:** 1 mg (1 mL) intramuscularly or subcutaneously, administered once a month, or as directed by a healthcare professional

If you are deficient in B12, a course of injections or high dose oral supplementation may be advised

(3) Health professionals recommend a full blood count and reticulocyte count 7-10 days after starting treatment, and eight weeks to confirm normal blood levels

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