The embryo transfer procedure is the procedure that places the embryo(s) in to the patient’s uterus (womb). Embryo transfer is done by placing the best embryo(s) into a thin plastic catheter; this catheter is then passed through the vagina and cervix into the uterine cavity (womb). Once in the appropriate location inside the uterus the embryos are injected inside. Very often physicians will utilize an ultrasound to visualize the tip of the catheter and ensure its proper placement.
The embryos chosen for transfer are evaluated by the embryologist and physician to determine the best quality embryos. The number of embryos transferred depends on the patient’s age, history, embryo quality, risk assessment, risk tolerance, and other diagnostic and clinical indicators.