Field-based Medical Science Liaisons are flourishing in today's pharmaceutical and biotechnology industries and have a variety of roles within their organizations. The Medical Science Liaison position was recently named one of the best jobs on CNN.com. Yet, many people do not know about this role, or if they have heard of it, are unclear about it. The purpose of this book is to provide a general overview of the Medical Science Liaison role in the pharmaceutical /biotech industry. For those working in these companies, this book will help understand about an important role in the scientific communications area. This book will also help those who collaborate with the biotech/pharma industry, including the physician, the clinical researcher, managed care professionals, and others in the healthcare professional arena, understand this role and position. Furthermore, it will provide a career overview as an option for pharmacists and other healthcare professionals or researchers. This book covers three distinct areas: Medical Science Liaison role and responsibilities, Medical Science Liaison operations, and Medical Science Liaison involvement in Investigator Sponsored Trials (ISTs). Not only does this role provide a challenging career, MSLs are well-compensated, and have the rewarding opportunity to positively contribute to the development of therapeutic options for patients.