A DOT-IMMUNOBINDING ASSAY FOR THE LABORATORY DIAGNOSIS OF TUBERCULOUS MENINGITIS AND ITS COMPARISON WITH ENZYME-LINKED-IMMUNOSORBENT-ASSAY
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Date
1991
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JOURNAL OF APPLIED BACTERIOLOGY
Abstract
In an attempt to establish an alternative to standard bacteriological methods in the laboratory diagnosis of tuberculous meningitis (TBM), a simple dot-immunobinding assay (Dot-Iba) was standardized to detect Mycobacterium tuberculosis antigen 5 and antimycobacterial antibody in cerebrospinal fluid (CSF) specimens of patients with TBM. Sensitivity and specificity of Dot-Iba was compared with conventional enzyme-linked immunosorbent assay (ELISA) and standard bacteriological techniques. The Dot-Iba showed excellent correlation with indirect ELISA for the detection of antimycobacterial antibody in CSF and showed 60% sensitivity and 100% specificity in culture-negative patients with TBM. However Dot-Iba was less sensitive for the detection of antigen 5 in CSFs and showed false negative results (60%) in culture-positive patients with TBM.
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Keywords
Laboratory Diagnosis
Citation
JOURNAL OF APPLIED BACTERIOLOGY. 71; 5; 428-433