PART I: FUNDAMENTAL PRINCIPLES OF ANALYSIS BY GAS CHROMATOGRAPHY AND MASS SPECTROMETRY Physical Theory and Equipment Design Injection and Headspace Technique Columns and Carrier Gas GC Detectors and Mass Spectrometry Quantification PART II: DRUG SCREENING Epidemiology of the Abuse of Drugs and Medicaments Methods of Sample Preparation for Drug Analysis Drug Screening from Urine by GC/MS PART III: ENVIRONMENTALLY HAZARDOUS SUBSTANCES IN WORKING MEDICINE Quantitative Determination of Pentachlorophenol and Lindane in Blood Headspace Gas Chromatography in Clinical Chemistry PART IV: ORGANIZATION AND COST-EFFECTIVENESS IN THE CLINICAL LABORATORY The Provision of Samples to the Medical Laboratory Internal Cost Calculations in GC/MS Analysis using Drug Screening from Urine as an Example Quality Assurance in the Clinical Laboratory using Drug Analysis as the Example