Blastocyst Embryo Transfer

The Blastocyst stage in embryo development occurs approximately five or six days after fertilisation. It is at this stage that embryos implant into the uterus. Using special culture medium, it is possible to allow embryos to grow in the laboratory for this length of time. Some embryos will successfully reach the Blastocyst stage, and these embryos can be selected for transfer. Research suggests that Blastocyst Embryo Transfer may improve pregnancy rates in certain cases.