injectable vitamin b12 is considered a dietary supplement Compounded Hydroxocobalamin (Vitamin B12) Injection and skin or coat abnormalities B12 Injections | Highlands Medical
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[15] [18] For borderline results, additional tests such as methylmalonic acid, homocysteine, or holotranscobalamin may be considered

Vitamin B12 injections are an excellent way to supplement cobalamin, as they bypass the digestive system

Reimbursement for the professional component is 5% lower for the new code, while the global reimbursement is 19% lower

Determinants of plasma methylmalonic acid in a large population: implications for assessment of vitamin B12 status

Veterinary testing: Veterinary Testing-Picture Courtesy: Cats.com There are some tests performed to confirm the effectiveness of vitamin b12 injection for cats