Table 3.

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

Patient status (no. of specimens)No. of specimens positive byb:
AMTDIIAMPLICOR
Smear and culture positive (25)22 [3]23 (1)
Smear negative, culture positive (8)7 [1]7 (1)
Smear and culture negative with final diagnosis of TB (8)5 [0]4 (2)
All TB positive (41)34 [4]34 (4)
Smear and culture negative, non-TB disease (138)00
Isolation of NTM (11)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.