
What is PGS?
What is PGS (Preimplantation Genetic Screening)? Around 50% of human embryos created during IVF are chromosomally abnormal before implantation, according to large-scale fertility studies. This rate increases with maternal age and is a major cause of failed implantation and miscarriage. To improve IVF success rates, many clinics now offer Preimplantation Genetic Screening (PGS), also known as PGT-A (Preimplantation Genetic