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A member asked:
Can vitamin b12 in the blood test fluctuate by 100 pmol/l in a month? i'm at 230 pmol/l now, was at 320 a month ago.
A doctor has provided 1 answer
Of course: Like many other labs, this fluctuates wildly. It reflects everything from what you may have eaten a few hours ago to your level of binding protein.
Answered 8/13/2017
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