To assess and evaluate embryo health before implantation and maximize the chances of a successful pregnancy, clinics typically use a process called preimplantation genetic testing (PGT).

PGT involves the examination of embryos created through in vitro fertilization (IVF) to identify chromosomal abnormalities and genetic conditions that could impact the embryo’s viability and potential to develop into a healthy pregnancy. There are three main types of PGT:

1. PGT-A (Aneuploidy screening): This type of testing looks for abnormalities in the number of chromosomes present in the embryo. A normal embryo should have 46 chromosomes (23 pairs), and deviations from this can lead to failed implantation or miscarriage.

2. PGT-M (Monogenic disorder screening): PGT-M is used when one or both parents carry a known genetic mutation that could be passed on to their offspring. By identifying embryos that are affected by the genetic disorder, clinics can select healthy embryos for transfer.

3. PGT-SR (Structural rearrangement screening): PGT-SR is utilized when one or both parents have structural chromosomal rearrangements that could cause infertility or recurrent pregnancy loss. This testing helps identify embryos that have inherited the chromosomal rearrangement.

The process of PGT involves taking a few cells from the embryo (blastomeres or trophectoderm cells) and analyzing their genetic material. Embryos that are deemed chromosomally normal and free of