Excerpt from Functional Diagnosis
This volume is another milestone on the highway of progress in Medicine. It marks another advance in the march toward prevention and control of disease.
The necessity for the use of tests of function, in attaining accuracy and completeness in the diagnosis of many diseases, and in determining the degree or the extent of physiological disorder, is obvious. The reliability of many of the available tests of function has been firmly and convincingly established. The futility of some of the proposed methods for this purpose has likewise been clearly indicated. Separation of the wheat from the chaff is in progress in this field as in every other in Medicine. The promise of development in the scope and proficiency of the methodology of function-testing appears to be limited only by the amount and character of the clinical observation and laboratory research this general means of study and diagnosis will attract and receive.
An obstacle in the way of rapidity of extension in the use and evaluation of many of the reliable functional tests, and of the development and improvement of such methods, is the wide dispersion of their descriptions throughout the great mass of original medical literature, with the consequent mechanical difficulty imposed on many laboratory workers and practitioners of thus studying and understanding these methods. This book, one of the first of its kind, represents an earnest and successful attempt to assemble, and render easily accessible, full and accurate descriptions of all the published procedures of actual or presumed value in functional diagnosis, and to present these descriptions in a classified arrangement, with indications of the relative values of the tests in each group, that will render selection and use of methods convenient and satisfactory under all conditions involving their application.
Many of the most valuable functional tests now in current use, and in increasing employment, are biochemical in character and also biochemical in functional import. It is, accordingly, a very great pleasure for me to commend this excellent volume to the attention of medical men generally, for its author, Dr. Max Kahn, and one of his two collaborators, Dr. Jacob Rosenbloom, are not only successful practitioners of medicine, with extended clinical and laboratory experience in the use of function tests, but for several years were ardent and able investigators and officers of instruction in the Biochemical Laboratory at the College of Physicians and Surgeons, each receiving the Columbia degree of Ph.D. in Biochemistry in recognition of his original work in this field, and both carrying with them into their life-work the esteem, affection, and abiding good wishes of the writer.
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