IVF III refers to the technique of pre-implantation genetic screening of embryos and is an abbreviation for the third generation of IVF assisted technology. There are one, two, and three generations of IVF assisted reproductive technologies. IVF III refers to pre-implantation genetic screening of embryos. Different IVF techniques are for different causes of infertility. Third generation IVF is mainly used for blocking and assisting conception of genetic disorders in the presence of chromosomal abnormalities. The technical steps ahead of the third generation IVF are the same as the first and second generation techniques. The difference is that after obtaining the embryos, the genetic material chromosomes of the embryos are extracted and analyzed, and the healthy embryos are screened before being transferred. Third generation IVF has added the embryo chromosome screening process, so the cost is relatively higher. It is recommended to take the appropriate reproductive assisted technology under the guidance of your doctor.