Book excerpt: Foundations of Perinatal Genetic Counseling is the first book to provide a practical introduction to the concepts and skills needed to practice genetic counseling with clients before and during pregnancy. In this new edition, the authors provide a revised and updated overview of these concepts including pregnancy basics, information of the perinatal genetic counseling session and family history, testing options and procedures (e.g., diagnostic testing, screening, carrier screening, assisted reproductive technology), common indications, pregnancy management, common counseling situations, and suggested learning activities. With newly expanded material, updated guidelines, and discussions on technological and procedural advancements in the field, Foundations of Perinatal Genetic Counseling: Second Edition is an essential companion for both the classroom and the clinic. Authored by genetic counselors at the forefront of contemporary perinatal practice, this all-in-one reference provides an accessible yet comprehensive overview of the most pertinent information for new learners and practicing counselors. Perinatal genetic counselors will find themselves returning to this unique resource long after their training has come to an end.