Wallach’s Interpretation of Diagnostic Tests, 10th Edition serves as a practical guide to the use of laboratory tests which aids physicians in using tests more effectively and efficiently by offering test outcomes, possible meanings, differential diagnosis, and summaries of tests available. The book is organized into 2 sections. The first section is devoted to disease states. Where appropriate, a patient’s chief complaint and/or physical findings are initially presented with subsequent discussions focused on discrete disease states as they relate to a patient’s chief complaint. The second section is devoted to an alphabetical listing of laboratory tests while stressing the integration of the clinical laboratory in the clinical decision making process. Test sensitivity, specific and possible and negative probabilities are included whenever appropriate. Microbiology tests are listed in a separate chapter.