Skin test for schizophrenia

摘要

A diagnostic method for assaying schizophrenia in a subject is provided wherein a preparation comprising platelet derived proteins or fractions thereof having a pI above about 6.5 is injected into a subject and the occurrence of delayed type hypersensitivity (DTH) reaction at the site of the injection is determined. A positive DTH reaction indicates that the tested subject has a high likelihood of being schizophrenic. The protein preparation used in the diagnostic method is also provided as well as a method for its preparation and a kit for use in the diagnosis of schizophrenia using the above method.