Halinka, stop supplementing now. If you want a baseline result you need to leave 3 or 4 months between supplementing and testing. I'm not aware B12 needs to be a fasting test and I think any time of day is fine.
Thanks Clutter. I am hoping that if there is indeed a deficiency, the non-methyl B12 I have been supplementing with will not have touched the sides, and something will still show.
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