Morning urine ovulation test is more accurate, but you should not drink a lot of water 2 hours before the test, and you need to choose to monitor from 10 am to 8 pm. Patients can choose to use morning urine for ovulation testing, which can ensure accurate results. It is recommended to avoid drinking a lot of water 2 hours before the ovulation monitoring, because excessive drinking may cause the concentration of luteinizing hormone in the urine to decrease, so as not to affect the test results. In addition, women can choose to perform ovulation testing between 10 a.m. and 8 p.m. every day, and ovulation monitoring needs to be performed at a fixed time for several consecutive days. It is recommended that women who are preparing for ovulation can choose to use morning urine to test whether they have ovulated, so that the test results are more accurate. In addition, women need to use the ovulation test paper within 1 hour after opening it.