This book is an outgrowth of the author’s experience teaching a toxicology course for 12 years at West Chester University and his interactions with physicans and laboratory toxicologists for 24 years in the Crozer Keystone Health System. These experiences provided valuable insights into the needs both groups have for an enhanced understanding of toxicology in the laboratory and in the emergency department. Accordingly, the present volume was written in hopes of meeting the requirements of both physicians and laboratory toxicologists by presenting the analytic and clinical aspects of toxicology