Indirect hemagglutination with PPD in cerebrospinal fluid for the tuberculous meningoencephalitis.

Reliability of indirect hemagglutination test was evaluated with PPD in CSF for the diagnosis and prognosis of tuberculous meningoencephalitis. The test was positive 100 percent in 22 patients with this disease and negative in 53 patients from the control group (p = 0.001) with viral or pyogenic infection in the CNS. No correlation was observed between antibody titers and the prognosis of the disease. Modifications of the original technique are described.