Be careful in that regard. The normal blood tests used for diabetes screening don't tell the whole story. My fasting glucose and A1c results are well below even pre-diabetic levels, but I definitely have a problem. It showed up on the Oral Glucose Tolerance Test in the form of a high 1 hour reading, and subsequent self-monitoring of my glucose levels at home show just how high my glucose levels go and remain when I eat carbs.

Between my body type, cholesterol levels and other criteria, I was not considered a diabetes risk. If not for the SFN, I would have never requested the OGTT and done the self-monitoring.

That being said, I still don't know what is going on, and I probably won't unless I go to an endocrinologist. All I know for sure is that my glucose levels run high under certain circumstances for prolonged periods of time, and that can cause the nerve issues associated with SFN.