Liza Jane's testing site www.lizajane.org may give you some help too. But based on your symptoms, I have to agree with Glenntaj.

You have described some of the same things I have and similar results with anti-inflammatory medicine. I have Sjogren's Syndrome with neuropathic damage coming from it. It's also possible you have more than one problem. The pre-diabetes has caused one of our other members,... "Brian".... to suffer from neuropathy.

Good luck,
Billye