Ovulation predictor kits work by detecting the luteinizing hormone, more specifically the LH levels in your urine. Right before a woman ovulates there is a surge (increase) in the LH. The OPK detects this surge. Ovulation generally occurs within the next 36 hours after the LH surge.

OPK’s help you detect this surge.

There are a variety of different kits, do you research when selecting or maybe try out a few to pick one that is best for you. Some you pee on stinks and others use cups.

Tips:

  • Test early afternoon. It is recommended not to use your morning urine.
  • Test around the same time every day.
  • Once you detect your LH surge, begin having sex that day and for the next couple of days.
  • Result window (depending on test) should have a line the same color or darker than the control line.
  • Urine always has LH in it. The test may pick this up and show a faint line.
  • If you are in a fertility treatment, contact your physician regarding test usage and LH surge

*Use an OPK in addition to the Basal Body Temperature method*