Although no long-term evidence exists that the course of disease is influenced by multiphasic health testing, this is largely irrelevant. Such programs are essential for other very important reasons. The existing and spreading concept of medical care as a right, with its elimination of personally paid fees, is creating a demand for periodic health checkups and health appraisals. This demand cannot be met by traditional methods totally involving the physician without great waste of doctor time. Multiphasic health testing can help separate the entry mix of patients into the well, the asymptomatic sick and the sick. This separation makes possible optimum use of physicians' services, which can be devoted to the area where they are most needed: the care of the sick.