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The main tests for checking B12 levels include: Serum Vitamin B12 Test: Measures how much B12 is in your blood, but high levels dont always mean theres a problem
Some people, however, struggle to maintain adequate levels of this vitamin due to various factors such as diet, absorption issues, or certain medical conditions
Younger people with B12 deficiency might need shots less often
The injections are safe, quick, and relatively painless
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