The Pre-implantation genetic diagnosis offers the opportunity to diagnose abnormalities in the embryo before implantation takes place:
Aneuploidy detection in couples with repeated miscarriages, in women of advanced years or after several in vitro fertilization processes without a positive result.
This diagnosis must be always done during the process of in vitro fertilization.
A blastocyst of the embryo is studied when it has 6-8 cells. The result is given the same day of the biopsy, permitting the immediate transfer of the embryo.