Abstract
The present study was conducted to detect and quantitate Mycobacterium tuberculosis from various body fluid specimens of cases of tuberculosis by real time PCR technique and compare results with conventional PCR technique and culture. One hundred fifteen children (<18 y) with tuberculosis (diagnosed as per IAP guidelines) and 32 disease matched controls from the Department of Pediatrics, S.N. Medical College, Agra, were included in the study. Different body fluids (CSF, gastric aspirate, pleural fluid, ascitic fluid and lymph node aspirate) were subjected to culture, conventional PCR targeting insertion sequence 1S6110 and Real time PCR targeting 16srRNA of Mycobacterium tuberculosis. Real time PCR showed significantly better results than culture in all body fluids (p < 0.05). It was superior to conventional PCR in CSF (p < 0.05) but showed comparable results in gastric aspirate, pleural fluid, ascitic fluid and lymph node aspirate (p > 0.05). Hence, real time PCR is a promising diagnostic tool for childhood tuberculosis, particularly tubercular meningitis.
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