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Lab tests Your doctor may also use a blood test to see if you have low vitamin B12 levels
This proactive approach helps detect any deficiency early, allowing for prompt action to prevent complications associated with B12 deficiency
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Some patients must continue to take supplements or receive injections for life depending on the reason for the deficiency
The price can vary quite a bit depending on where you go, whether you buy a single shot or a package, and if your insurance decides to cover it
ipo B12 Injection
For background on how the FDA has treated unapproved GLP-1 products, see the February 2026 FDA research-use-only update
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