Pre-implantation genetic testing is a technique in which one or more cells are taken from a fertilized egg for testing to provide information about the genetic make-up of the rest of the cells in that embryo. Testing typically takes place five days after the egg has been harvested and fertilized in an IVF laboratory.
We recommend pre-implantation genetic testing for couples with certain inherited diseases, such as a history of single-gene disorders (i.e., cystic fibrosis or sickle cell anemia) or sex-linked disorders (i.e., Duchenne muscular dystrophy and Fragile X syndrome). Genetic screening may also be indicated for those with recurrent pregnancy loss, previous IVF failures, severe male factor infertility, or advanced reproductive age.