I think doctors do a lousy job treating pre diabetes. I remember about 10 years before I was dx'd with D my fasting was 104. All my doctor said is watch your sugar. Well, I rarely ate sugar so I thought I was OK. Fast forward 10 years and I was dx'd full blown D with fasting of 240. So I should have been told to test so I could have prevented lots of damage. Now I watch all carbs, not just sugar and keep HbA1c around 5.3, which is still higher than normal. A normal HbA1c runs from 4.0-5.2 or so. So even at 6.0 you are well above normal, although not diabetic quite yet. You are in that risky zone. If you are over weight they may call it metabolic syndrome or glucose intolerant but it is all part of the same disease diabetes. Since you have been testing I would rotate testing some fastings, some after meal bgs just to keep abreast of if your disease starts to progress. A normal non D will usually be back to fasting after he eats. So use that as your cue to keep after meal bgs as close to 100 as possible.