[Hemolytic reaction of sheep erythrocytes as a method of diagnosing multiple sclerosis].

The ability of the blood sera from patients with disseminated sclerosis (DS) to lyse native sheep red cells but not any other red cells was revealed. A method for the diagnosis of DS was developed: sheep red cells hemolysis test (SRCHT). The test was positive in all DS patients (altogether 96 cases) and negative in the controls. The hemolysin titer correlated with the disease severity, SRCHT permitted the diagnosis of DS long before manifestation of clinical symptoms.