PGD is a technique that can be used during IVF to test embryos for specific genetic disorders prior to their transfer to the uterus. This technique makes it possible for couples with certain serious inherited disorders to decrease the risk of having a child who is affected by the same problem. A single cell is removed from each embryo that will be tested. This embryo biopsy is generally performed three days after the egg retrieval. The cell(s) are then sent to a special genetics laboratory for testing for the specific disorder. Only the embryos that are free of the specific disorder are transferred to the uterus. Patients interested in this technique must also undergo genetic evaluation and counseling.

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