I have been diagnosed with PCOS by my Endocronologist ( after being diagnosed with hypothyroidisim) I think the diagnosis was based on my symptoms and some blood tests ( but off the top of my head can't remember what these may have been, as I have had so many BT's since!!) I have only had a fasting glucose test since being on Metformin ( I think middle of last year) and that was fine. Pre IVF I was on 3 tablets a day, but now am taking 2. The only other thing I have been told is that having PCOS puts me at a higher risk of gestational diabetes, so if I do get pg, my endo wants to monitor this very carefully.