I have not had any recent b12/folate serology done. But my last ones were early last year at: Serum B12: 760.00 R/C Folate: 2036.00 I do not remember in months leading up to this I did do some hydroxob12 injections 1000mcg and some cyanocobalamin lozeneges erk. So that may be responsible for the high normal b12. These were ceased 2 months before testing though. Fredd: Do you have somewhere I can send you a pathology spreadsheet done up by my previous doctor I can no longer afford to see? You may find some of it quite interesting. I'm in the process of putting $$ aside to go back to this doctor. He seems to be the only doctor I know in my part of Australia with half a clue. hixxy.