What is PGD?
Preimplantation genetic diagnosis (PGD) is a technique that allows embryos to be tested for certain conditions prior to being transferred into the uterus of a woman. PGD can be used to diagnose a wide variety of chromosomal and genetic conditions in embryos. Due to the technique involved, PGD is possible only in conjunction with in vitro fertilization (IVF). IVF allows fertilization of the eggs to take place in a laboratory, where the resulting embryos can be tested before being placed into the uterus.