Detailed tabular summaries of information likely to be needed for the clinical use and interpretation of laboratory test measurements: test names (with synonyms where relevant), methods, specimen requirements, reference value ranges (with age distinctions) in both the older metric and the systeme international (SI) systems, chemical interferences, and in vivo effects. The last two columns of each table provide notes on clinical interpretation and brief discussions of details not covered in the first four columns. The first section covers most of the widely used laboratory tests, and the last three sections cover measurements and procedures of special importance in genetic disease, virology, oncology, and "identity" testing; procedures relevant to therapeutic drug use; and microbiological procedures. Each section has its own references. The allotment of particular tests to the opening broad section on "general clinical tests" or to one of the last three sections sometimes seems more procedurally logical than clinically relevant, but the detailed indexes arranged by test and disease get around this potential weakness.