The collective term PGT - Preimplantation genetic testing is now used for PGD/PGS tests. PGT is particularly recommended in cases where one of the parents has a genetic disease. It is also advisable in situations where a woman has had several miscarriages. PGT analysis can significantly reduce the risk of miscarriage in the first trimester of pregnancy and at the same time detect certain genetic diseases. However, it is not a substitute for prenatal screening for congenital anomalies.