Table 1.

Comparison of AMTDII and AMPLICOR amplification assays with smear and culture results and clinical data for respiratory specimensa

Patient status (no. of specimens)No. of specimens positive byb:
AMTDIIAMPLICOR
Smear and culture positive (97)89 [7]a95 (2)
Smear negative, culture positive (17)13 [2]13 (4)
Smear and culture negative with final diagnosis of TB (12)6 [1]5 (2)
All TB positive (126)108 [10]113 (8)
Smear and culture negative, non-TB pulmonary disease (151)00
Isolation of NTM (19)00
  • a P values were not significant.

  • b Values in brackets represent the number of specimens which turned out to be positive when retrospectively tested after dilution. Values in parentheses represent the number of specimens showing a negative amplification control which turned out to be positive when retested after dilution.