Preimplantation Genetic Screening
PGS is a test that helps to identify genetic defects in IVF embryos. This is useful in preventing certain disorders or diseases from being passed to the child. The process screens embryos for chromosomal normalcy prior to implantation in the uterus by removing and testing a cell from the embryo.
Significant improvements have been made in PGS technology in recent years. The previous technology (PGS/FISH) did not result in an increase in pregnancy rate and in some studies slowed embryo growth to the blastocyst stage. The current technology (PGS/aCGH or NGS) improves pregnancy rates across all age groups and minimizes the potential harm to the development of the embryo.