
04/23/2025
How do you use ovulation predictor kits?
OPKs or ovulation predictor kits are picking up that ovulation trigger, the LH surge. You’re going to p*e on it like a pregnancy test and watch for the first positive. I always recommend testing between 10 AM and 2 PM—LH leaves the brain in the early morning, has to filter through your kidneys, and finally shows up in urine.
One issue I see is people testing first thing in the morning and never catching a surge even though they’re definitely ovulating.
Once you get a positive, you do not need to keep using them. If you are TTC, the goal is to have int3rcourse that day and the next day.
IMPORTANT: About 7 % of cycles show a false‑positive LH. We mostly see this with PCOS or low ovarian reserve because baseline LH runs high, making it more difficult to spot the true LH surge or elevation.
Watch this week’s YouTube video to learn more about cycle tracking and how to use fertility awareness methods to get pregnant fast!
Dr. Natalie Crawford, a board-certified OB/GYN and REI, gives a comprehensive guide to cycle tracking. During National Fertility Awareness Week, Dr. Crawford...