We use LH testing kits to predict ovulation - in conjunction with monitoring temperatures, they're supposed to be helpful in predicting the best time for insemination. Everything I read on the subject, however, gets less and less clear on when
this optimal time actually is
. The closer to ovulation the better, and early rather than late seems to be the message. LH levels surge 24-36 hours before ovulation, so we inseminated on the day of the surge and the next day. Will this work? Who knows! (Watch this space).
The tests we used were "Advanced LH Home Ovulation Tests" kits from Access Diagnostics. They're cheap, simple to use, and arrive within a day or two of ordering. Please note: this is not intended to be an advert/endorsement/whatever - but it took us a while to find an affordable source of these things, and thought it might be useful to give a link for anyone else looking.