Krikkit, the first IVF if often trial and error dose-wise if you haven't used the injects before. I did 2 IUI's with 75iu of Puregon and then my last IUI with 100iu. Since I only produced one follicle on 100iu we started at 225iu for IVF#1 (6 eggs) and then used 325iu for IVF#2 (6 eggs) and #3 (5 eggs). My FS doesn't want to go higher even though I'd be willing to try up to 450iu.