Blastocyst cultivation

During the first fertilization, usually the embryo transfer into the uterine cavity occurs on the second or third day after fertilization when it reaches the stage of 2-4-8 cells. But after being transferred into a woman's body, it cannot be known whether the embryo continues its development. Yet by performing embryo transfer at the blastocyst stage (on the fifth-sixth day of development), i) there is confidence that the embryo is alive, and ii) it’s strength is known, i.e. natural selection has occurred. An embryo at the blastocyst stage is completely ready for binding to the uterus, and there is a much higher chance that this will happen. By helping the embryo grow to the blastocyst stage, we can choose embryos with higher implantation potential. During the natural fertilization process, if fertilization took place in the female uterine tube then the embryo reaches the uterine cavity at the blastocyst stage.

This method is used: