Although there have appeared numerous articles on the Kahn test during the past several years, it is believed that studies on this test should be highly encouraged. Such studies, if sufficiently extensive, will throw further light not only on its value in the diagnosis and treatment of syphilis but also on its limitations. This, indeed, was our aim in undertaking a series of studies on this test—to obtain a picture of its reliability as a diagnostic agent in syphilis, its sensitiveness in detecting this disease, and its sources of error, from the point of view both of the serologist and of the clinician and syphilologist.
The present study is based on 15,000 Kahn tests compared with the Wassermann. The blood specimens used were those received in the laboratory of the Ohio Department of Health for the serum diagnosis of syphilis. Such specimens are received daily in quantities of from 150
BERRY F, EY LF, DeLONG GM. STUDIES ON THE KAHN TEST: I. FIFTEEN THOUSAND EXAMINATIONS COMPARED WITH THE WASSERMANN TEST. JAMA. 1927;88(17):1306–1307. doi:10.1001/jama.1927.02680430008004
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