Patient's question:
NoDoctor's answer:
The ovulation test strip is designed based on the principle that luteinizing hormone (LH) in urine reaches its peak 24-48 hours before ovulation. It is used to detect the LH peak to guide contraception or conception. Testing should begin on the 5th day of the menstrual cycle, once daily. If two colored bands appear, with the test line noticeably lighter than the control line, it indicates that the LH peak has not yet occurred in the urine, and testing must continue daily.