New member of the club here.

[William769]

3. A1C levels between 5.7% and 6.4% indicate prediabetes.

my AiC has been as high as 12.5% with a glucose level of 1400 (that put me in the ICU in a diabetic coma). When I finally got out of the hospital my Endocronologist ordered me a CGM (continuous glucose monitor). I now have my diabetes under control with a A1C 6.2%.

I cannot take Metformin because I have stage 3 kidney diease. I take long acting & short acting insulin to control my diabetes.

I am by no means an expert but have lived with diabetes for 14 years.