The timing of infertility examinations cannot be generalized and should be determined based on the specific test and gender. For males, the primary tests include semen analysis and sperm morphology exams. These require the male to abstain from ejaculation for 2-7 days because if the abstinence period is too short, less than 48 hours, both sperm quality and semen volume may be low, which does not reflect the true level. Conversely, if the abstinence exceeds seven days, it can also affect the results of the test. For females, if undergoing a six-item hormone test, it is best conducted during days 2-5 of the menstrual cycle. For a fallopian tube patency test, it is safer to conduct it between days 3-7 after the menstrual period has ended. The exact timing of these tests should be advised by the attending physician.