The Tietz Textbook of Clinical Chemistry and Molecular Diagnostics, 6th Edition provides the most current and authoritative guidance on selecting, performing, and evaluating the results of new and established laboratory tests. This classic clinical chemistry reference offers encyclopedic coverage of the field that defines analytical criteria for the medical usefulness of laboratory procedures, introduces new approaches for establishing reference ranges, describes variables that affect tests and results, examines modern analytical tools and their impact on laboratory management and costs, and demonstrates the applications of statistical methods. It is THE definitive reference in clinical chemistry, now fully searchable and with quarterly content updates, podcasts, and extended content online through Expert Consult. Analytical criteria focus on the medical usefulness of laboratory procedures. Reference ranges show new approaches for establishing these ranges - and provide the latest information on this topic. Lab management and costs gives students and chemists the practical information they need to assess costs, allowing them to do their job more efficiently and effectively.