Ovulation today: Hi nessa, that is how the test works. The ovulation test detects the natural lh surge which from start to end only lasts about 24 hours. That is why once it's postive, you do not need to re check again. Good luck!
Answered 5/4/2014
5.5k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question