Seems to me that with the low B12, you really don't need anymore tests, anyway. You've got two autoimmune diagnoses, and a low B12 which, for you, could either be malabsorption from Crohn's, or autoimmune from pernicious anemia. I don't see how your docs could say your symptoms are out of whack for your electrical findings---PN is generally pretty severe, symptoms wise, by the time there are ANY nerve conduction abnormalities. Actually I'm surprised they did the skin punch when you had the abnormal conductions---I mean, the diagnosis was already made, really, wasn't it? Most people get a skin punch because their nerve conductions are normal and their doctors want to confirm a small fiber diagnosis.

How's your B12 now?