This video shows Diagnostic Laparoscopy Tubal Patency Test. In the normal pelvis, the uterus, tubes and ovaries are gleaming with health. Neither the tubes nor the ovaries should be stuck down by adhesions. The presence of any abnormality such as endometriosis, fibroids or adhesions is noted. To assess tubal patency, a blue dye (methylene blue) is injected into the cavity of the uterus via a special plastic or metal cannula placed in the canal of the cervix. The cannula also allows the surgeon to move the uterus in any direction.