Preimplantation Genetic Diagnosis

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Preimplantation Genetic Diagnosis (PGD) allows the ability for embryos to be tested for specific known genetic abnormalities before they are transferred back to the uterus.

If the embryos are tested for abnormal chromosomes, this is called Preimplantation Genetic Testing (PGT).

If the embryos are tested for a specific gene defect such as cystic fibrosis or sickle cell, it is called Preimplantation Genetic Diagnosis (PGD).

PGD or PGT is completed in a lab, using in vitro fertilization (IVF). More than one cell from each embryo is sent for genetic testing. Following the genetic analysis results of tested embryos, presumably genetically healthy embryos devoid of the genetic abnormality tested are selected and transferred to the uterus, where they may attach to its lining and produce a pregnancy.

To learn more about PGD and PGT, visit or call the UofL Physicians - Fertility Center at 502-588-4400.