Good to know Beehappy! I have the same dose.
Thanks Kricket. They also told me I would be going for a blood test 12 days post IUI, but I dont know if I can wait that long!!
I had Ovidrel 250mcg last cycle and got BFN on day 10 (so no false positive). I think if you have a higher dose it can stay in your system longer though.
I would wwait atleast 10 days.