Blastocyst Transfer

What is a Blastocyst?

After fertilization embryos undergo a synchronized stage of development. Embryos are cultured until day 5 when normally a blastocyst is formed. At the blastocyst stage two distinct cell types have been formed. One of these types will eventually comprise the fetus and the other that will form the placenta.

What is Blastocyst Transfer?

Occurs on day 5 of embryo development. On consultation with your physician selected blastocyst(s) are deposited into the uterine cavity by transfer catheter.

Benefits of Blastocyst Transfer

With sufficient good quality embryos available Blastocyst transfer allows a more selective criteria on choosing embryos for transfer. It allows the transferring of fewer high quality embryos, which reduces the risk of multiple pregnancies.

Risks of Blastocyst Transfer

With extended culture of embryos there is an increased risk of embryo arrest and demise. Therefore blastocyst transfer should be a procedure discussed with your physician. There is a list of criteria that determines if you are a good candidate for extending your embryo culture to the blastocyst stage.

What is Frozen Blastocyst Transfer?

A pre-determined number of embryos (frozen at day 3)are thawed and cultured 2 additional days. Not all embryos will develop to the blastocyst stage therefore your physician will discuss if this is in your best interest prior to procedure.