1887

Abstract

Tuberculosis (TB), an infectious disease caused by complex (MTC), remains one of the leading causes of death in the world. In Korea, the current prevalence of multidrug-resistant TB (MDR-TB) poses a major problem. The most common method for diagnosing TB in developing countries is sputum smear microscopy; however, the sensitivity of this test is relatively low and it usually requires well-trained laboratory staff. Cultures of MTC require up to several weeks in sophisticated facilities, such as Biosafety Level 3. Effective diagnostic techniques are necessary to control TB. In Korea, we evaluated a loop-mediated isothermal amplification (LAMP) assay targeting the gene (TB--LAMP) of MTC. For clinical evaluation, culture confirmation, smear microscopy and TB--LAMP were performed on 303 sputum specimens obtained from suspected TB patients in Korea. The sensitivity, specificity, positive predictive value and negative predictive value of TB--LAMP were 71.1, 98.8, 91.4 and 95.1 %, respectively, compared with TB culture, which is the gold standard for diagnosis of TB. In contrast, the comparable values of smear microscopy were 24.4, 98.1, 68.8 and 88.2 %, respectively. Therefore, we concluded that TB--LAMP was superior to the use of smear microscopy for the detection of MTC in sputum specimens in clinical settings in Korea.

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2015-11-01
2019-10-14
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