Here the strong positive generally lasts how long to turn weak positive, if refers to the results of ovulation test paper test, ovulation test paper strong positive generally lasts 24 ~ 48 hours to turn weak positive. Ovulation test paper test strong positive, the ovary may be in 24 ~ 48 hours or so ovulation, after ovulation in the body of the luteinizing hormone decline, ovulation test paper test will be from strong positive to weak positive or negative. To accurately use the ovulation test paper, in order to accurately monitor the ovulation situation, the body’s luteinizing hormone to reach the peak state, the ovulation test paper will show a strong positive result, the fertility requirements of women should be ready to cohabitate, the ovulation test paper from strong positive to weak positive period should be arranged to cohabitate, the same day cohabitate once every other day cohabitate once more, the chances of getting pregnant will be greater. It is important to learn how to correctly read the results of the ovulation test paper to be able to determine the discharge of the follicle. If you have any other questions, it is recommended that you consult a medical professional.