Preimplantation Genetic Screening (PGS) is a test that is used to determine the number of chromosomes in an embryo. It is designed to check for chromosomal changes that can prevent the embryo from implanting or lead to a miscarriage.
Preimplantation Genetic Diagnosis (PGD), on the other hand, is designed to check for mutations that cause disease, like, Cystic Fibrosis, Huntington’s Disease, etc. PGD is customized to each patient’s case and can help eliminate or (substantially lower) the risk of transferring a dangerous mutation from parent to offspring.
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