Teresa Cacchione is a board-certified genetic counselor at RMA of New York who guides patients on several genetics-related concerns such as cytogenetic anomalies, carrier screening, family history concerns, and preimplantation genetic testing (PGT) of embryos, including single-gene disorders, aneuploidy, and structural rearrangements. In this episode, we take a deep dive into the topic of genetic testing, including the rapid evolution of the field over the last decade, and as you will hear from Tereasa, science has truly come a long way to help individuals optimize their chances of conceiving. She explains to listeners what PGT broadly involves and then gets into the different variations – PGT-A and PGT-M. She also discusses the advantages and disadvantages of 23andMe home testing, why eggs and sperm are near impossible to test for viability, the conditions that are typically screened for, the new research around mosaicism, and how testing science is impacting the world population.