If those levels are for 12 hour fasting blood draws, that would be considered diabetic, or close to it (impaired glucose tolerance), either one of which could result in small-fiber neuropathy . . .

And I am extremely wary of anyone doing decompressive nerve surgery without both direct evidence of a compression, such as a history of stenosis or trauma, and without a very extensive work-up. There are so many possible causes of neurologic symptoms, and the symptoms from compressive causes can be mimicked by many other etiologies, that a real process of elimination investigation is called for to rule out more systemic possibilities (though I realize for those with poor insurance or lack of access to specialty centers this is easier said than done).