Ovulation test strips are still accurate. The main purpose of using ovulation test strips is to detect the peak of luteinizing hormone in the urine, because about 24-48 hours before ovulation, the luteinizing hormone in the urine will reach a very high peak, and a strong positive result will appear after the test, and after a strong positive result, ovulation will occur in about 24-48 hours. Therefore, the purpose of using ovulation test paper is to know the time of ovulation so that you can have intercourse to increase the chance of pregnancy. However, if ovulation test strips are not stored properly, they may not be accurate, for example, if the ovulation test strips are out of date or due to humidity, which may affect the ovulation test results. Therefore, it is important to check the integrity of the ovulation test strips before testing.