The TET procedure involves the transfer of embryos that are more advanced in development than those in ZIFT i.e. cleaved embryos. The aim is to achieve fertilization in-vitro (in the laboratory) and then replace the cleaved embryos in the Fallopian tube, the normal site for fertilization. It is suitable only for women who have at least one healthy Fallopian tube.
TET is carried out as a day-case procedure under a general anesthetic, using laparoscopy. You may experience some abdominal discomfort and pain for a few days after the procedure, but painkillers can relieve this.
To whom may TET be advised?
The main groups of patients selected for TET procedure are women who are keen to have gamete intra-Fallopian transfer (GIFT) but where there is doubt about the chance of fertilization, and women who encountered difficulties in previous embryo transfers through the cervix.
Success rate of TET treatment
The success rate for TET is in the region of 25-40% per embryo transfer, but varies depending on many factors such as the woman's age and the number of embryos transferred, etc.