Book excerpt: Postmortem Toxicology addresses the various aspects of the practice of forensic postmortem toxicology from a viewpoint of elements which must be taken into consideration for proper interpretation of the toxicological result, not in a vacuum but in a more holistic and global sense. The volume examines pre-analytical factors, storage containers/conditions, prior medical interventions and therapy, along with information from the scene investigation and anatomical findings. This reference also provides explanation of the complicating conditions for the interpretation of the toxicological results due to postmortem decomposition, embalming artifacts and the postmortem redistribution of drugs. Tolerance is also discussed as an aid to interpreting results from a habitual/chronic user of medications and/or drugs of abuse. The book is geared towards the current practitioner; however, it is written to be used as a valuable reference for a graduate or post-graduate level courses in forensic toxicology or forensic pathology.