What is an "ovulation predictor kit"?

What is an "ovulation predictor kit"?

Jay Goldberg (Obstetrician/Gynecologist, Cedars-Sinai Medical Center) gives expert video advice on: How can I check my cervical mucus to know when I'm ovulating? and more...

An ovulation predictor kit is a device that detects a surge of the luteinizing hormone in the urine. That hormone surges when you're about to ovulate, so you can detect that initial surge on the urine stick, and you're able to predict, with some certainly, ovulation within about 24 to 48 hours.