This series of books provides coverage of all of the major analytical techniques and their application in the most important areas of physical, life and materials science. Each text is presented in an open learning/distance learning style, in which the learning objectives are clearly identified. The reader's understanding of the material is constantly evaluated by the use of self-assessment and discussion questions. Series Editor: David J. Ando

It is now recognized that, in order to ensure the validity of a forensic science analysis, a number of criteria need to be met. These include the following:

• The sample under investigation is suitable for the analysis being carried out.
• The analytical procedure adopted will answer the particular question(s) being asked, for example, with respect to identification, quantification and profiling (comparison of samples).
• The data obtained are both correctly recorded and interpreted.
• The findings are accurately reported.

In this book, the major classes of drugs of abuse are addressed, the analysis of which follows a systematic framework, including description, presumptive testing, thin layer chromatography, instrumental methods and data analysis. Throughout the text, regular questions and answers are used to further develop an understanding of the processes being employed.

This book will appeal to both undergraduate and postgraduate students of forensic science, as well as those practitioners who are new in post or receiving additional or refresher training. It should also be of benefit to those who are studying controlled substances as broadening courses in other scientific disciplines.