Hi, Ed. I also understand that I would need several people in the same family to make generic testing of any practical value. Unless I hear otherwise, I'm of a mind now to let the matter drop. My neurologist has asked me to try an EB-N5 supplement. Have you heard of it? It appears to be some super vitamin supplement, several vitamins, minerals, etc., all packed into a single capsule. I'll try it, although something tells me it's a moonshot. But I'll try it; after all, what have I got to lose––except for the $140 for a three months supply? And the promo lit for EB-N5 says you need to give it at least six months to see if it's doing anything for you. Okay, six months. That'll be New Year's Day. That means I can start planning on running in Denver's spring marathon. Only kidding!––as if you couldn't guess. My partner and I have friends coming over for dinner: a couple, and he's deep into trying to problem-solve his diabetes. He, like I, has discovered this strange crossover between diabetes and PN. I know from past get-togethers if he and I start talking medical stuff … well, pity anyone else at the table! LOL ––Ray