Advances in the understanding of the growth requirements for embryos has fostered the development of new laboratory approaches in the culturing of embryos. One such advancement in IVF therapy is blastocyst transfer, also known as day five embryo transfer.
The blastocyst stage is the point at which the embryo normally exists within the uterus and is usually capable of implantation. With blastocyst transfer, fewer embryos are transferred to the uterus, which limits the possibility of high-order multiple pregnancies that often put the mother and babies at risk.
Though fewer embryos are transferred at the blastocyst stage, the pregnancy rates are similar to-if not higher than-when more embryos are transferred via the traditional IVF method. In addition, by waiting until day five, the embryos indicate by their rate of development which have the most potential to implant.
Advantages of Blastocyst Transfer
- Transferring embryos that have developed to blastocyst stage should help improve pregnancy rates, because we know the embryo has developed to a more advanced stage of development. In our program, our pregnancy rates have increased from about 40% per retrieval with the day 3 transfer to almost 60% per retrieval with day five transfer.
- Because the embryos have developed to blastocyst stage, we can transfer fewer embryos to achieve pregnancies, thus limiting the possibility of a triplet or greater pregnancy. Generally, with blastocyst transfer excellent pregnancy rates can be achieved by transferring only two embryos. Our most recent results suggest that 40% or more of transferred blastocysts are capable of implantation.
Community Fertility Specialty Care routinely provides day five transfer procedures for all of our IVF patients. We are happy to be able to provide this service, and we are committed to offering the most modern, state-of-the-art embryo transfer or any other aspects of assisted reproductive technology. For more information, call 317-621-2414.