How do frozen embryos allow physicians to perform genetic testing?
Morgan Fertility can test embryos for certain genetic mutations in our laboratory. Embryo freezing has allowed for Preimplantation Genetic Diagnosis (PGD) and Preimplantation Screening (PGS).
1. PGD: Preimplantation Genetic Diagnosis tests the embryo for a specific genetic condition (cystic fibrosis, for example) before transferring the embryo to the uterus.
2. PGS: Preimplantation Genetic Screening is the proper term for testing for overall chromosomal normalcy in embryos, identifying mutations in the chromosomes that can lead to miscarriages or a baby being born with a chromosomal disorder like Down Syndrome, for example.
Both PGD and PGS embryo testing allow for gender selection, also called family balancing, where only the embryos of the gender you specify will be transferred to the uterus where it can implant into the uterine lining and grow into a baby girl or boy (your choice). Embryo Testing Process:
First a physician retrieves fertilized eggs and then a biopsy is performed on each embryo by an embryologist. Once this is completed the embryos will be frozen awaiting test results. Lastly, the physician will transfer the embryo where the genetic mutation is absent.
See more: Genetic Testing of Embryos