Breadcrumb Home Patients and Families Personalized Genomic MedicineLearn how personalized genomic medicine works and what it can possibly do for you. How does genetic testing work?Learn what a genetic test is and more about the steps involved in the process.What is genetic counseling?Learn more about the genetic counseling process and what to expect at a counseling appointment.Medline Plus (formerly Genetics Home Reference)A source of information provided by the U.S. National Library of Medicine.