Fat Adaptive and High Blood sugar levels

By your definition I know I am fat adapted. I go 16 hours without eating easily. I am never crazy hungry and don’t crave carbs. BUT…I own a blood glucose monitor and my fasting blood sugar is HIGH. So high I know my doctor is going to want to put me on meds. It’s diabetic levels high. This is new. I have lost 40 pounds and am near my ideal weight. I did not have high levels when I was fat. Isn’t the definition of being fat adapted mean your blood sugar is low? Any ideas what’s going on with me? I am concerned.