Although the specimen of choice in the US drug testing industry is urine, and serum in clinical medicine, interest has recently grown in the use of other matrices as drug testing media. This comprehensive book provides researchers and forensic toxicologists with a convenient general text summarizing the state of knowledge today. The book is organized into chapters based upon specimen type, each describing the composition of the matrix, sample collection, preparation and analytical procedures, drugs detected to date, and a discussion of the interpretation of positive findings. These chapters focus specifically on the application of these practices to drugs of abuse. Comprehensive and easy to use, this book offers the means to solve difficult forensic mysteries and to better answer the critical questions of the criminal justice system.