Rapid diagnosis of tuberculous meningitis with a dot enzyme immunoassay to detect antibody in cerebrospinal fluid

  • A. Mathai
  • V. V. Radhakrishnan
  • M. Thomas


A simple dot enzyme immunoassay (Dot-EIA) was carried out to detect antibody toMycobacterium tuberculosis antigen 5 in cerebrospinal fluid (CSF) specimens from 40 patients with a clinical diagnosis of tuberculous meningitis (TBM). The assay gave a positive reaction in all ten patients with culture proven TBM. In 30 culture negative patients with TBM, the assay was positive at a titre of 1:16 in 18 patients. In 40 patients with non-tuberculous neurological diseases (control group) the assay was negative at a titre of 1:16. The Dot-EIA had an overall sensitivity of 70 % and a specificity of 100 % in the diagnosis of TBM. This assay could be used as a rapid screening test to establish the diagnosis of TBM, particularly in patients in whom bacteriological investigations forMycobacterium tuberculosis in CSF specimens are negative.


Internal Medicine Tuberculosis Meningitis Cerebrospinal Fluid Clinical Diagnosis 
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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1991

Authors and Affiliations

  • A. Mathai
    • 1
  • V. V. Radhakrishnan
    • 1
  • M. Thomas
    • 1
  1. 1.Department of PathologySree Chitra Tirunal Institute for Medical Sciences & TechnologyTrivandrumIndia

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