Tubal infertility and particularly, proximal tubal occlusion (15-25%) is gaining increasing attention among experts of reproductive medicine. In case of bilateral tubal occlusion in vitro fertilization is indicated, since the expected pregnancy rate is the same as can be expected from macrosurgical procedures. Despite the fact that better and better results are being obtained by sophisticated assisted reproduction techniques, in vitro fertilization procedures that are performed unnecessarily or not indicated objectively can result in serious consequences for the patients as well as for health insurance. Therefore, there is no question that refining procedures used for evaluating the tubal patency is extremely important in order to reduce physical and psychological burden on the patients, as well as from the viewpoint of cost-effectiveness. We demonstrate an optional protocol which can be performed as a one-step evaluation and recommend a diagnostic method to assure tubal patency. The procedure is easy to perform by diagnostic hysteroscopy, and according to our experience, the examination is highly accurate.