how exactly do ovulation kits work?

I was peeking at them in Target the other day and they seem to come in packs of 7, and they would tell you if you're ovulating in the next 24-48 hours. So would you start testing at day 10 or so and then test every other day? I'm not sure how the whole thing works.

Re: how exactly do ovulation kits work?

There are charts in the package. If you cycle is 28 days, I think you start using them (don't quote me) on CD9 and continue using them every day until you get a positive.

Re: how exactly do ovulation kits work?

Even though the results are for atleast 24 hours, you would still test everyday?

Re: how exactly do ovulation kits work?

The opks measure the LH surge. They are predictors.....when you have a positive you should be bding. You can get several days in a row of positive opks. Most of the time you don't ovulate until your LH goes over 20 miu's ...but the opks show a positive sometimes at 15 mius. You should actually use opks, twice a day, close to O time.

Personally I prefer the fertility monitor, it's the most accurate opk device out there.