Icon Image | Photo: Shutterstock When it comes to genetic analysis in reproductive medicine, there exist a number of commonly heard terms, such as Pre-Implantation Diagnosis (PID), Pre-Implantation Genetic Testing (PGT), Pre-Implantation Genetic Diagnosis (PGD), Pre-Implantation Genetic Screening (PGS). But how can they be distinguished from one another? Are there any differences between them? I