Preimplantation Genetic Testing (PGT) is a process used in assisted reproduction (IVF) to diagnose genetic abnormalities in embryos before they are implanted into the woman’s uterus. This test can identify whether an embryo carries hereditary genetic disorders or other chromosomal abnormalities that may affect the child’s health or the success of the pregnancy.
Genetic testing is performed after in vitro fertilization, when the embryos are developing in the laboratory environment and before implantation.

PGT helps couples reduce the risk of hereditary or genetic diseases by selecting the healthiest embryos for implantation. This can reduce the chances of miscarriage or the birth of a child with serious genetic disorders.

PGT is not necessary for all couples. It is primarily recommended for couples with a history of genetic diseases, women of advanced reproductive age, or couples who have experienced multiple miscarriages.

PGT is done after IVF, once the embryos have developed in the laboratory and before implantation into the uterus. It is typically performed on the 5th day of embryo development (at the blastocyst stage).

Certain rare diseases or genetic mutations may not be detectable with current testing methods. The choice of the type of PGT depends on the couple’s medical history and the diseases they wish to screen for.

Yes, special permission is required to perform Preimplantation Genetic Testing in Greece from the National Authority of Medically Assisted Reproduction.  Approval is granted only if it is demonstrated that the conditions are met, such as the severity of the genetic disorder, repeated miscarriages, or advanced maternal age.