10.22376/ijpbs.2019.10.1.p1-12 Volume 2 Issue 3 2011 (July - September) Among infectious diseases, TB remains a leading cause of morbidity and mortality worldwide. Identification of tuberculosis infected individuals is essential in order to control the disease. Therefore there is a need for newer methods for rapid, sensitive and accurate diagnosis. In the present study, we have made use of antigens for the organism extracted from lessThan i greaterThan Mycobacterium tuberculosis lessThan /i greaterThan H lessThan sub greaterThan 37 lessThan /sub greaterThan Ra (ATCC 25177). ELISA technique performed gave sensitivity and specificity of 90% of TB in lessThan i greaterThan M. tuberculosis lessThan /i greaterThan infected patients confirmed by culture. We conclude that the performance of extracted antigens is valuable in the diagnosis of TB. Sooraj.S.Nath1, Nathiya.K1 , Angayarkanni. J2, And Palaniswamy.M Tuberculosis, ELISA, Filtrate antigens, Diagnosis. 378-382