The plot thickens!
I saw the GP couple of days after endo had prescribed me Metformin, (which I hadn't started taking due to other tests I was having done) GP was still reluctant to go along with this decision as previously discussed here because I am not overt diabetic but would work with endo.
I asked if before starting MF I could have a further GTT as have only ever had one which was done last September when my BS was fasting 5.2 post glucose 8.2-hence my IGT prediabetic diagnosis.
Had GTT yesterday and GP phoned me today and said readings within normal range 5.3/6.2 so not even prediabetic!
She said that whatever I had been doing diet/exercise wise over the past year had reduced BS levels back to normal range but as I am genetically predisposed to diabetes I will continue to be monitored and hopefully the inevitable will be delayed for a good while yet.
So, if I had not asked for the further GTT I would have started on the Metformin to treat prediabetes which I now don't appear to have!
PS My HBA1C was 5.6 when had it tested 2 weeks ago