Infertility examinations primarily involve tests for both men and women. For men, the examination includes a semen analysis which requires abstinence for 2-7 days. Semen should be collected through masturbation, using a specialized semen collection cup provided by the laboratory. Ordinary condoms should not be used for semen collection. After collection, the semen must be kept warm and promptly delivered back to the laboratory. For women, the examinations include several aspects. First, during the menstrual period, blood is drawn on an empty stomach between the 2nd and 4th days to check hormone levels, and an ultrasound is used to assess the baseline state of the ovaries. Second, between the 3rd and 7th days after the menstrual period ends, when sexual intercourse is prohibited, tests are conducted to examine the uterus and fallopian tubes. These may include hysterosalpingography, hysteroscopy, or laparoscopy to evaluate the condition of the fallopian tubes. Third, monitoring ovulation with ultrasound begins from the 8th to 10th day of the menstrual cycle, tracking the development of follicles and the uterine lining until the follicle matures and ovulation occurs.