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Table 3 Number of M. tuberculosis colonies for the eight positive cultures on Coletsos medium in both 0.7 % chlorhexidine and NALC-NaOH decontamination

From: Chlorhexidine decontamination of sputum for culturing Mycobacterium tuberculosis

  Number of M. tuberculosis colonies detected
Specimen 0.7 % Chlorhexidine NALC-NaOH
1 8 12
2 47 7
3 52 8
4 83 31
5 >100 13
6 >100 17 (+contamination)
7 >100 66
8 >100 >100