What is ovulation test paper after ovulation?

After ovulation, ovulation test paper will change from strong positive to weak positive, ovulation test paper on a bar. But this is only a preliminary judgment, due to different products, subject to the instructions. Ovulation test paper is mainly through the detection of female luteinizing hormone peak, to determine the approximate time of ovulation. Women in the test, if the test found that two bars, indicating that the detection of luteinizing hormone peak, in 24 to 48 hours to ovulation, at this time to increase the number of cohabitation, while continuing to test. If you want to more accurately determine the status of ovulation, you can go to the hospital after ten days of cohabitation blood test, to determine whether pregnant.