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  • Title: [Gamma interferon testing in blood and cerebrospinal fluid--rapid method for the diagnosis of tuberculous meningitis].
    Author: Luca MC, Petrovici CM, Vâţă A, Dorobăţ C, Năstase E, Luca V, Teodor A, Luca A.
    Journal: Rev Med Chir Soc Med Nat Iasi; 2008; 112(1):108-10. PubMed ID: 18677912.
    Abstract:
    AIM: To evaluate the benefit of this early method of diagnosis of tuberculous meningitis, gamma-interferon levels comparatively in blood and cerebrospinal fluid (CSF). MATERIAL AND METHOD: We have studied 50 patients with tuberculous meningitis admitted in the Clinic of Infectious Diseases Iaşi between 2006-2007, from the epidemiological, clinical, diagnosis and therapeutical points of view. RESULTS: Tuberculous meningitis was more frequent in males, with a mean ration of 2.5. The age of patients varied between 2 and 78 years of age, with a mean value of 30.5 years. 35.6% of patients were children. In 32 cases the meningeal infection was secondary, disseminated from a primary site, most frequently from the lungs (68,7%). The bacteriologic confirmation was through culture in 13.3%, with an average of 23.4 days of incubation. In whole blood the sensitivity Quantiferon TB Gold assay (QTF) was 78.57%. In CSF the specificity was higher than in blood (96.1 vs. 88.4%), having a positive prediction value over 90%. Antituberculous therapy prior to QTF testing had a negative impact, 50 to 6 cases having negative QTF results. CONCLUSION: The performance indicators of TB Gold Quantiferon Test in serum or CSF are high, being more sensitive and rapid than the direct exam of CSF or BK culture.
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