As a rule, preimplantation genetic diagnosis (PGD) is performed three days after an IVF procedure is done. This technique is applied to screen an embryo for genetic diseases prior to its transfer in the uterine cavity. This diagnosis is performed during IVF and helps to select stronger embryos without genetic disorders.
PGD is strongly recommended to couples running a high risk of their future baby having congenital diseases.
This diagnosis is carried out during IVF +ICSI. The positive result of PGD is directly connected with a large number of embryos. When an IVF procedure is done, embryos are cultivated in a special medium in the course of three days. By the end of the third day of their development the embryos consist of 6-8 blastomeres (cells produced through a zygote division). On this stage of its development an embryo cell is capable of substituting the other embryo cells. It is equal to them and it can develop and divide. If one of the blastomeres is removed, the adjacent cells can substitute it through division causing no harm to the embryo.
The embryologist selects one of the blastomeres of the embryo and examines it with the help of a microscope. Its genetic data gives information on the probability of potential pathologies of the embryo and its gender. When the preparation to an IVF procedure is completed, the embryos are transferred into the uterus.
But this diagnosis has its negative sides as it reduces the possibility of achieving a pregnancy.
If you do not want to run a risk of your future baby having genetic disorders or if you want to know a gender of your baby, a PGD procedure should be performed by highly skilled specialists at specialized IVF clinics equipped with modern equipment for preimplantation genetic diagnosis.
For example, Nova Clinic disposes of equipment of world-known marks such as Olympus, Nareshige, Takai Hit.