There are two types of Coriolan, one is a pregnancy test pen that determines early pregnancy by measuring human chorionic gonadotropin in the urine, and the other is an ovulation test product that monitors ovulation by measuring luteinizing hormone in the urine, which has a higher accuracy rate when used correctly according to the product instructions. However, whether it is a pregnancy test or an ovulation test, since the hormone levels in the urine are measured, the test results are not 100% accurate due to the amount of water consumed before the test, the early testing time, the low concentration of hormone levels in the urine, and the endocrine dysfunction of the body. If you are not sure about the test results and have doubts, it is best to go to the hospital to have blood tests for human chorionic gonadotropin and progesterone to determine if you are pregnant or to check the maturation of follicles and ovulation under ultrasound monitoring.