Some conditions, like atrophic gastritis or celiac disease, can block the absorption of B12, while vegan and vegetarian diets can lead to insufficient intake, as animal products are a main source of B12
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What does a vitamin B12 injection do for you
While this represents a higher per-treatment cost than oral supplements, the superior absorption and reduced frequency often make injections cost-competitive over time, particularly for those who dont absorb oral forms effectively
E/M services provided in a non-facility setting are considered an inherent component for providing an Injection service
15,16 In patients with clinical symptoms of vitamin B 12 deficiency and low levels of serum vitamin B 12 , no further confirmatory testing is generally needed before treatment is initiated