RESUMO
Utility of C-reactive protein (CRP) latex agglutination test in meningitis was evaluated. Serum CRP test was positive in 100% cases of meningitic groups and 53% cases of "no meningitis (NM)" group. Cerebrospinal fluid (CSF) CRP test was positive in 100% cases of pyogenic meningitis, whereas it was negative in 95% cases of tuberculous meningitis and 100% cases of NM group. CSF CRP test showed 100% sensitivity and negative predictive values, 95-100% specificity and 94-100% positive predictive values for various inter-group differentiations. This study concluded that CSF CRP positive cases should be considered as pyogenic meningitis unless proved otherwise. Routine use of this simple, reliable and inexpensive test is recommended for rapid diagnosis and differential diagnosis f meningitis.