Xpert MTB/XDR Clinical Evaluation Trial

The Xpert MTB/RIF assay (Cepheid, Sunnyvale, CA) is an integrated, automated, cartridge-based system for MDR-TB diagnosis that uses the GeneXpert instrument platform. WHO confirmed evidence to support the widespread use of the Xpert MTB/RIF assay in 2010 and the assay has since been widely used in TB programs, but it is only capable of identifying Mycobacterium tuberculosis (Mtb) and detecting RIF resistance. The Xpert MTB/XDR assay will be evaluated for INH and second-line resistance detection, and to recommend its use in diverse clinical settings. The focus of this protocol is the multicentre clinical evaluation.