Reduced critical concentration might not have improved MGIT-based DST's sensitivity to rifampicin.

Rupasinghe P, Ashraf A, Barreda N, Parveen S, Zubair M, Calderon R, Asif S, Hirani N, Chingisova L, Bulane A, Hang PT, Ha DT, Ardizzoni E, Kursheed N, De Rijk WB, Rigouts L, Guglielmetti L, Mitnick C, de Jong BC.