TABLE 1.

Reproducibility testing

Drug (concn in μg/ml)No. of tests performedaNo. of results agreeing with reference method (BACTEC 460 TB)Agreement (%)
INH (0.1)170170100
INH (0.4)17016597.1
RIF (1.0)17016999.4
EMB (5.0)170170100
EMB (7.5)16716699.4
STR (1.0)17016999.4
STR (4.0)170170100
 S   Total of tests1,1871,17999.3
  • a Center 1, 10 strains in duplicate at three different times (thus, six replicates per strain); center 2, 10 strains in triplicate at three different times (thus, nine replicates per strain); and center 3, 10 strains in triplicate (thus, two replicates per strain).