I do not understand how he can think you are T1 with a fasting BS of 99, and an A1c of 5.7, both normal, and I believe that you said you were prediabetic, so I assume you are not on any Meds for diabetes.

But what if you're fasting insulin level is lower now because through exercise you have improved your insulin sensitivity and you're less insulin resistant? But then, I've just spent some time looking at the testing of insulin levels for fasting numbers, and since your glucose level is slightly elevated, it seems to support the idea that if the insulin level is low, then there has been beta cell burnout.

Thanks to all for your replies. I finally called the MD office to find out about the antibody tests. The sub nurse left a message saying that the results were "normal". No other follow up. While I am glad that I ddn't test + for the antibodies. I still don't have any answers. So does this mean I am "cured" and that I am no longer insulin resistant? - or did the lab maybe screw up and give a false low reading in the insulin levels. I continue to have 50 -60% jumps in my bs levels post running outdoors, but they do drop down pretty quickly. What all this means, I just don't know - I'm really trying to stave off future problems. Two years ago, I was told by another endo that once you have documented blood sugar resistance/pre-diabetes - that it never goes away - you just control it with your diet and exercise for as long as you can. Thanks for listening - any insights appreciated!