PGD involves several steps, beginning with the stimulation of the ovaries to produce multiple eggs. These eggs are then retrieved and fertilized in the laboratory. After a few days of development, when the embryos reach the blastocyst stage, a few cells are carefully biopsied from each embryo. These cells are then analyzed for genetic abnormalities. Based on the results, embryos that are free of the targeted genetic conditions are selected for implantation.
