To find out if the fallopian tubes are open, they have to be examined. There are many different tests in this category. One of the more common ones is tubal lavage. The volume of the uterine cavity is small, usually no more than 5 ml, so we can test the patency of the fallopian tubes based on the response of fluid reflux and resistance. The so-called tubal lavage is to put a tube into the uterine cavity and then inject the fluid. The fluid will flow from the tube, through the uterine cavity, then to the fallopian tube, up to the pelvis, and finally back. However, tubal lavage is performed manually by the doctor and may be biased in the diagnostic result. Laparoscopy. Laparoscopy allows a clear view around the fallopian tubes to determine possible problems. The disadvantage of laparoscopy is that it is expensive, so it is not the first choice for checking the fallopian tubes. In addition, tubal aeration tests and ultrasound are also ways to check the condition of the fallopian tubes. There are many methods of tubal examination, each with its own advantages and disadvantages. It is recommended that you consult your doctor in detail and listen carefully to his advice before having this test. After the tubal examination, there may be some discomfort in the body, such as abdominal pain, increased leucorrhea and vaginal bleeding, so you should contact your doctor for treatment in time.