Genetic counsellor, Kelly Loggenberg, explains the two different types of genetic testing of embryos. Genetic testing of embryos created through in vitro fertilisation (IVF), also known as preimplantation genetic testing (PGT), is the testing of early stage embryos for genetic abnormalities prior to considering them for transfer into the womb. PGT is comprised of two different tests, Preimplantation Genetic Testing for Aneuploidy (PGT-A) and Preimplantation Genetic Testing for Monogenic Disorders (PGT-M). PGT-A This test screens embryos created through IVF to determine if the correct amount of genetic material (chromosomes) is present. Typically, an individual has 23 pairs of chromosomes, or 46 chromosomes in total in most cells of the…