The 12panelnow.com Ovulation Test Strips is a qualitative test used to predict an LH surge, which experts consider to be a reliable way by WHO. Also, the Luteinizing hormone increase triggers ovulation when the egg is released periodically from normal fertile women in the middle of the menstrual cycle. Ovulation will occur after 24-48 hours following a positive test. It is for over-the-counter (OTC) use. The LH test is a fast and accurate way to test for ovulation. The reaction time of most testing strips is as low as 5 minutes. You can verify your test results after the 5 minutes interval. You can read your results within 3 – 5 minutes of testing for more accuracy. Ovulation Test Strips is a qualitative test used to predict when there is an LH surge, which is stated to be a reliable way by WHO. The Luteinizing hormone increase triggers ovulation when the egg is released periodically from Normal fertile women in the middle of the menstrual cycle. Ovulation will occur after 24-48 hours following a positive test. It is intended for over-the-counter (OTC) use.