Specimen | Number | Positive by conventional ZN staining | Positive on bleach concentration method |
Pooled samples | 16 (14.28%) | 32 (28.57%) | |
sputum | 112 | ||
Morning samples | 13 (11.60%) | 47 (41.96%) | |
Gastric aspirate | 5 | 0 | 2 (40%) |
E T Tube | 2 | 0 | 2 (100%) |
Bronchial lavage (BAL) | 12 | 1 (8.33%) | 5 (41.66%) |
Total | 131 patients | 17 (16 + 1) | 56 (47 + 2 + 2 + 5) |