Mass spectrometry is a major tool to characterize, identify, and detect hundreds of known and unknown drugs. This book provides a detailed overview about the mass spectrometry of numerous classes of therapeutics and agents relevant to doping control laboratories, the necessity of various analyzers enabling the detection of low- and high molecular weight drugs as well as the discrimination between endogenously produced and synthetically derived compounds. It adds perspective to the health and ethical issues of doping in sports, and the role mass spectrometry plays in both detecting unknown drugs and protecting athletes. Scientists and researchers involved in drug design, metabolite identification, and environmental analysis, and sports medicine and drug research bodies will utilize this resource.