PGD is a reproductive technology used with an IVF cycle to increase the potential for a successful pregnancy and delivery. It is a genetic test on cells removed from embryos, to help select the best embryo for pregnancy to help select The best embryo for pregnancy or to be free of a genetic disease.PGD may be considered for those couples who are at increased risk for chromosome abnormalities or specific genetic disease or had several miscarriages. Women over 38 yrs of age and men with some type of sperm abnormalities may also produce embryos with higher rates of chromosome abnormalities.