Variable 12h to 3d: Ovulation test detects a surge of the hormone lh in urine. Lh starts to rise approximately 32-36 hours before ovulation and reaches a peak 24 hours before ovulation then falls sharply. So its detection depends on the accuracy of the test and when did you do it at the beginning, height or end of the surge.
Answered 12/17/2014
5.2k 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
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