People taking high-dose B12 supplements (1,000 to 5,000 mcg daily), receiving B12 injections (cyanocobalamin or methylcobalamin), or consuming heavily fortified foods can easily push their serum levels above 900 pg/mL
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Dosage: 1,000 mcg is the typical dose for most adults
Purpose of the Vitamin B12 Test Doctors may recommend a vitamin B12 test for a variety of reasons, including: Diagnosing a deficiency: To confirm whether symptoms such as fatigue, weakness, memory loss, or numbness are due to a vitamin B12 deficiency
Summary Vitamin B12 is an important vitamin that you can get through diet or supplements
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