Vitamin B12 level: Can be high for several reasons: 1) you are taking vitamin B12 as a supplement or eating a diet high in b12. 2) your body cannot metabolize B12 so it stays in your blood stream but does not get into your cells where it needs to go for it to work. There are tests to determine if the latter is the case. Treatment would be geared towards getting the B12 to be utilized by the body appropriately.
Answered 2/7/2020
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