This is important information for any Idopathic PN'er and especially any neuro that doesn't bother to do a Glucose Tolerance Test to their patient and only relies on a normal blood test for diabetes, this really surprised me in that, i would have thought every test known for PN would have been done before they slap the word idopathic onto their patients, especially diabetes being the most common cause of PN.
My neuro sent me for a 3 hour glucose tolerance test on the very first visit to him, which fortunately the cause was found, first up " prediabetes ".
Anyway thanks for sharing the info.

Brian