ABSTRACT
Urine tests are among the oldest clinical laboratory tests and are used widely throughout the world. The number of urines tested, the type of methodology used, and the different test parameters measured have all been directly and indirectly investigated by the authors. Urine was the first body material to be observed in relation to disease. The initial observations were quite general and were documentation of various physical measurements and visual observations. Urine study results can often be related to biochemical and physiological changes in people all over the world. Limitations to more widespread use of urine study throughout the world involve several factors which indirectly impinge on clinical laboratory practice. The economic status of some areas may be such that laboratory testing of any kind will have a low priority. There is a growing interest in health in the world, and with better communications, even remote areas may be kept up to date on the latest health maintenance procedures.
