I wonder what the low cutoff for B12 was for this study? We know that the cutoff of 200 is set way too low. What about B1 and B6? Are the "normals" for these set too low too?

It seems that often when a doctor finds diabetes they don't look any further for a cause. When I was first diagnosed with PN, my neurologist tested me for DM more than once.

Wish this study mentioned gluten as a cause of PN.
Anne