I have been T2 Diabetic for many years, controlled pretty well by diet and exercise. There are some doctors who consider that "pre diabetes" is simply diabetes that isn't bad enough to treat yet.
Metformin is OK but it gives me bad gastro problems, some people can take it without problems.
Ask for your results in figures, if you haven't had an Hba1c then ask for one, it will give an accurate diagnosis.
Whatever you do, do not ignore it, diabetes can cause a lot of problems, heart, eyes, feet, and a lot of other things.
I currently have heart failure, retinopathy of the eyes, and some other minor things, possibly as a result of diabetes, even though I have had it under close control for many years. Have a look on the Diabetes UK forum, lots of information there.
Gleason 6 = 3+3 PSA 8.8 P. volume 48 cc Left Cores 3/3, Volume = 20% PSA 10.8 Feb '19 PSA 1.2
Jan '20 PSA 0.3
I suspect that 'prediabetic' is as unmedical a term as 'borderline diabetic'!
But if the onset had been associated with rapid weight gain, there's a good chance (not a certainty) that it will disappear with weight loss. And weight loss when HT finishes isn't too hard, usually.
I also reckon it's worth you popping into a diabetes forum and ask the experts.
-- Andrew --
"I intend to live forever, or die trying" - Groucho Marx
Yeah no intention of ignoring it, I will go to GP in a few weeks to get the bloods checked again. I am assuming my prediabetes is a result of medication/treatment/weight gain etc but we know not to assume for too long although I do think it will ease given I hope to get a lot fitter stronger lighter etc. I do think it's just an indication that blood sugars a bit higher than they were, I have had these routine nhs checks for a few years and no issues before. I'll keep metformin in mind if it comes to that.