Preimplantation Genetic Testing or PGT is a laboratory process performed during an IVF cycle in which embryos can be tested for abnormal chromosomes before they are transferred to the uterus. One or more cells from each embryo can be sent for genetic testing. After this test, genetically healthy embryos are transferred to the uterus, where they may attach to its lining and produce a healthy pregnancy.
Generally, PGD is recommended for someone who has or is a carrier of a known genetic disorder. In some cases, it may be recommended for someone with recurrent miscarriage, someone who is older or whose ovaries do not work as well as expected, or someone with multiple failed fertility treatments. Some couples also choose to do PGS for personal reasons.