Table 2.
Overview of results from the three different culture systems in the analysis of sputum samples from 565 patients with suspected pulmonary tuberculosis
| Smear Sample | n |
M-MGIT |
A-MGIT |
L-J |
All systems |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Positive growth |
−ve or Con |
Positive growth |
−ve or Con |
Positive growth |
−ve or Con |
Positive growth |
−ve or Con | ||||||
| MTC | NTM | MTC | NTM | MTC | NTM | MTC | NTM | ||||||
| +ve AFB | 77 | 58 (75.3) | 13 (16.9) | 6 (7.8) | 60 (77.9) | 12 (15.6) | 5 (6.5) | 56 (72.7) | 10 (13.0) | 11 (14.3) | 63 (81.8) | 12 (15.6) | 2 (2.6) |
| −ve AFB | 488 | 164 (33.6) | 2 (0.4) | 322 (66.0) | 167 (34.2) | 4 (0.8) | 317 (65.0) | 123 (25.2) | 1 (0.2) | 364 (74.6) | 178 (36.5) | 6 (1.2) | 304 (62.3) |
| Total | 565 | 222 (39.3) | 15 (2.6) | 328 (58.1) | 227 (40.2) | 16 (2.8) | 322 (57.0) | 179 (31.7) | 11 (1.9) | 375 (66.4) | 241 (42.6) | 18 (3.2) | 306 (54.2) |
Data are presented as n or n (%).
M-MGIT™, manual Mycobacterial Growth Indicator Tube; A-MGIT, automated Mycobacterial Growth Indicator Tube (BACTEC™ MGIT™ 960); L-J, Löwenstein-Jensen culture method; AFB, acid-fast bacilli; +ve, positive; −ve, negative; Con, contaminated