This publication, the last of three course materials in the medical laboratory technician field adapted from the Military Curriculum Materials for Use in Technical and Vocational Education series, was designed as a refresher course for student self-study and evaluation. It can be used by advanced students or beginning students participating in a supervised laboratory or on-the-job learning situation. The course is divided into four volumes with student workbooks, texts, and a supplemental handbook of reference materials for each volume. Volume 1 introduces the course and reviews chemistry and safety. Volume 2 discusses body metabolites, liver function tests, proteins, carbohydrates, and enzymes. Volume 3 includes retention and excretion tests; clearance and concentration-dilution tests; gastric analysis; chromatography, electrophoresis, and other tests performed by consultant centers; hormones; and toxicology. The final volume reviews proper microscope adjustment, critical illumination, specimen collection and preservation in urinalysis, renal anatomy and physiology, the physical characteristics of urine, microscopic examination, and chemical examination. Each of the volumes contains chapters with objectives, text, review exercises and answers to the exercises. A volume review exercise without answers is provided. (KC)