b12 injection procedure code Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical How To Give B12 Injections
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High doses are usually administered via injection to avoid absorption problems, but studies show that oral administration may also be effective
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Methylmalonic acid (MMA) and homocysteine levels: Both become elevated in B12 deficiency and can help confirm diagnosis when serum B12 is borderline

Approximately 11% of those who follow vegan diets are also deficient in B12
