Genetic screenings on the embryos are done to rule out genetic and chromosomal disorders, like sickle cell disease and sex selection for sex chromosome diseases.
PGT-A (previously known as preimplantation genetic screening or PGS) is a treatment add-on. It involves checking embryos created by in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) for abnormalities in the number of chromosomes.
