The need to use morning urine for the test strips depends on the type of test strips and the time of pregnancy. In the case of ovulation test strips, morning urine should not be used. Since ovulation test strips mainly monitor the concentration of LH in urine to determine whether the patient is ovulating or not, and the relatively high level of LH in morning urine may have an impact on the accuracy of the test results. In the case of early pregnancy test paper, the test is performed through the level of human chorionic gonadotropin in urine, and the test paper will show positive when the hormone level reaches a certain concentration. If the patient’s pregnancy days are still short and the intercourse time has not exceeded 12 days, the test needs to be performed with morning urine. This is because the morning urine is the excretion of the nighttime metabolism, in which the human chorionic gonadotropin is the highest level of the day, and the test results are most accurate at this time. If the patient has had intercourse for more than 12 days, it is not necessary to use morning urine. As the fertilized egg grows, the level of human chorionic gonadotropin is increasing and even urine from other times of the day can be tested more accurately. If a patient wants to be sure if she is ovulating or pregnant, the best test is to go to the hospital to have a blood test for beta-HCG or to check the LH level, or you can monitor the size and shape of the follicles by ultrasound to determine this.