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Result of the 500-sample analysis. Sputum Smear Microscopy (SSM) is shaded while nanoparticle-based colorimetric biosensing assay (NCBA) and Xpert MTB/RIF are not shaded. For the SSM test, 32 were positive (32+) and 468 were negative (468−); The 32+ SSM samples were all positive in Xpert and NCBA. Of the 468− (negative) SSM samples, 48 were positive and 420 were negative in both NCBA and Xpert MTB/RIF.
