Is a b12 level of 300 normal?

Related questions

1. Do eggs have vitamin b12?
2. How do vegetarians get b12?
3. What is the use of cyanocobalamin?
4. Is it OK to take 1000 mcg of b12 a day?
5. What is a normal vitamin b12 level for a woman?
6. What happens if your b12 is too high?
7. Is b12 deficiency life threatening?
8. What are the symptoms of high vitamin b12 levels?
9. How long does cyanocobalamin stay in your system?
10. Is High b12 a sign of cancer?

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