I would agree that you should continue your combination chelation until you see the ferritin much lower. If possible, get the liver MRI, also. Your glucose test is high, but the high HbA1c isn't really unusual for thals, as it is almost always on the high side in thals. I think you will do much better with your sugar issue when your iron load is completely under control (which should be the goal of every thal. It makes life so much better).