Preimplantation Genetic Screening (PGS) is a method in which the chromosomes of embryos are checked before they are transferred to the uterus. The aim of the test is to select embryos that have a normal number of chromosomes, thus increasing the chances of successful implantation and healthy pregnancy development.

Why is PGS applied?

In IVF cycles, the selection of embryos to be transferred is based mainly on their morphology, that is, their image and structure under the microscope.
However, good morphology does not always guarantee that an embryo is genetically healthy.

PGS offers the ability to assess the actual chromosomal health of the embryo before its transfer.

What does Preimplantation Genetic Testing offer?

Embryos selected through PGS have:

• greater chance of being successfully implanted

• lower risk of miscarriage

• higher chance of developing into a normal pregnancy

• increased chance of giving birth to a healthy newborn

PGS does not change the IVF process — it enhances it, allowing the doctor to more accurately select the most suitable embryos for transfer.