"What tests do I order, and what do the results mean?" Interpretation of Diagnostic Tests, Eighth Edition provides the answers—quickly and clearly—for a vast range of adult and pediatric conditions. Arranged by organ system, the book summarizes the available tests for most diseases, explains what the results mean, and discusses differential diagnoses. This thoroughly updated edition includes additional tests based on molecular biology, new data on the use of genetic tests, and many new diagnostic laboratory tests in chemistry. Imaging tests are included where they play a key role in diagnosis. The section on chemical and microbiological terrorism has been expanded. Readers can search for information in the way that best suits their needs—by index, table of contents, test results, or specific disease. Also included are extensive tables of normal and panic values, tables comparing test results in similar diseases, and an appendix of conversion factors between conventional and SI units.