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Table 1 Rifampicin susceptibilities in correlation with the REBA MTB-Rifa® assay on clinical isolates and sputum samples

From: Utility of the REBA MTB-rifa® assay for rapid detection of rifampicin resistant Mycobacterium Tuberculosis

  Phenotypic DST Sensitivity Specificity
RIF susceptible RIF resistant
Clinical isolates REBA MTB-Rifa® Assay No mutations in RRDR* 277 4 98.1% (211/215) 100% (277/277)
REBA MTB-Rifa® Assay Mutations in RRDR* 0 211
Sputum samples REBA MTB-Rifa® Assay No mutations in RRDR* 132 0 100% (96/96) 100% (132/132)
  REBA MTB-Rifa® Assay Mutations in RRDR* 0 96   
  1. *RRDR Rifampicin resistance determining regions; RIF Rifampicin; DST Drug susceptibility testing.