Sometimes it's a wonder I can get through a whole day without some kind of "oppsies" I have been getting odd results with the OPK tests ( i use the green one-step tests) and this morning, after using the tests about 35 times I have finally discovered what I have been doing wrong. The back of the packet says to not submerge the strip any more than the "max" line. This is an image of what the strip looks like: http://img.alibaba.com/img/pb/639/061/235/1264492322143_hz_myalibaba_web16_2596.jpg You'll notice the green handle. For whatever reason I have been putting the whole thing up to the start of the handle into the cup, completely missing the now very clear "max" line that you see in bold at the bottom of the strip . I don't know why I read that to be correct way to do it! Maybe I'll have more success with it next month Seriously though, would you leave me alone with your child?