Liz, my philosophy is if it works keep going with it. I meant to tell you the other day that that is how my PN began, in 2001 a partially numb big toe, thought it was maybe toenail digging in . It wasnt until 2003, after it had spread to both feet from toes to balls of feet that I found out what pn was. Previous from that i thought i might be from my back, had mri etc. I had a very physical job and shrugged off a lot of ache and pain and injuries and kept working. If i would have stayed home for every ache and pain i would never have gone to work. You are much smarter than me to be doing something about it this early. Hopefully like Brian you caught it early and something can be done about it before it progresses...keep taking that B12 is i guess what im trying to say, dont concern yourself with what you blood level numbers are.