There really isn't a "prediabetes". You either have it or you don't. The AIC will be elevated. Normally they want a person to have a AIC below 7.0---preferably lower.
AIC is also known as gylcosated hemoglobin. The high blood sugar molecules attach to the red blood cells and are not shed very rapidly. The test can give a number that will indicated whether your blood sugar was elevated over the past 3 months.
This is a wonderful test as it gives a good number that docs can go by in your treatment. Also, people can't lie to the doc anymore cause the AIC tells like it is.
I have had very low AIC's after losing 25 pounds. I was diagnosed 2 years ago. I knew that I had it and the docs didn't believe me. Finally ended up in the hospital and that is where they found that it was 7.3. I was put on Metformin which is a very good drug. Some people can't take it and it does cause a transient nausea that can be the pits sometimes. I have to make sure that I eat right after I take my pill.
I cut out the pop and really ate healthy and very small portions and the weight just fell off. My AIC the next time was 5.8, next one was 5.9 and the last one was 6.0. I have been eating more than I did and I will be finding out this fall just what my AIC is doing. I am sure I will have to get more control back in my life again.
The one thing that is so great these days is that for the people on Medicare we are required to go to diabetes classes held at the hospital. It is a total of 8 hours and they go over so many things that make life easier. How to figure carbs, deal with different foods, exercise. You name it they talk about it. Lots of questions from the audience also.
I am also required to see a doctor every 6 months about my diabetes and have AIC, cholesterol blood work plus have my blood pressure checked and my feet inspected. This is a very good deal as they can prevent or cut off at the pass any problems that might arise and get out of hand before the patient themself decides they need to be seen.
Hope you are getting info that can help you out. Irish