I went to my GP yesterday and checked my records to see if i had any B12 tests done. I did last year, but was too spaced out to remember. It came in the 400s, so right in the middle of the 'normal' range. My folate, done the year before was low at 156 (normal being 187-645). As the methylation protocol has been turning my immune system back on i guess that means that for me, its mainly about folate, rather than B12?