TABLE 3.

Resolution of discrepant results by proportion method on solid LJ mediuma

Drug (concn in μg/ml)Initial results for:Resolved resultsb for:
R by MGIT 960; S by 460 TBS by MGIT 960; R by 460 TBR by MGIT 960 and PM (true resistant)S by MGIT 960 and PM (true susceptible)R by MGIT 960; S by PM (false-resistant ME)
INH (0.1)413
INH (0.4)312
RIF (1.0)110
EMB (5.0)31013
EMB (7.5)312
STR (1.0)918
STR (4.0)1064
    Total of tests33111122
  • a S, susceptible; R, resistant; PM, proportion method.

  • b Arbiter results based on the proportion method.