Table 3. Line listing of samples with discordance between GeneXpert and MGIT liquid culture for detection of TB.
| GeneXpert result | Culture result | Smear result | HIV status | Started Rx prior to sample collection? | Sputum quality |
|---|---|---|---|---|---|
| MTB not detected | Positive | Not detected | Negative | No | 2ml; mucoid |
| Positive | MTB not isolated | 2+ | Negative | No | 2.5ml; mucoid |
| Positive | MTB not isolated | 2+ | Negative | Yes; received 1 dose | 2.5ml; mucoid |
| Positive | MTB not isolated | 2+ | Positive (not on ART) | Yes; received 1 dose | 1.5ml; semi-mucoid |
| Positive | MTB not isolated | Not detected | Negative | No | 3ml; saliva |
| Positive | MTB not isolated | 1+ | Negative | No | <5ml; not viscous/watery |
| Positive | MTB not isolated | 3+ | Positive (not on ART) | No | 2ml; mucoid |
| Positive | MTB not isolated | Not detected | Positive (not on ART) | Yes; received 1 dose | 2ml; mucoid |
| Positive | MTB not isolated | 1+ | Positive (not on ART) | No | 2ml; semi-mucoid |
| Positive | MTB not isolated | Not detected | Has not been tested | No | <5ml; saliva |
| Positive | MTB not isolated | Not detected | Positive (no response re ART) | No | <5ml; mucoid |