A new edition of Henry's book, formerly the Todd-Sanford-Davidsohn text of the same name, is always greeted with anticipation, and the 18th edition is no exception. This is indeed the premier work that bridges the gap between clinical and laboratory medicine, and individuals working in both areas rely on it as their standard reference. How will the editor manage to capture the ever-expanding field of laboratory medicine, and how will the authors capsulize the vast material in their areas of interest in a limited number of pages?
Besides a general updating and revision of virtually all the material in the text, some topics have received special attention. The first of the book's seven parts gives a thorough review of the "nuts and bolts" of the clinical laboratory, including instrumentation, reference values, and specimen collection and handling. There is a very nice discussion of interpretation of laboratory results and rule-based decision