Concordance between GeneXpert and conventional laboratory NAAT results for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG)
| NAAT result | |||
| GeneXpert | Positive | Negative | Total |
| Chlamydia trachomatis | |||
| Positive | 209 | 11 | 220 |
| Negative | 3 | 2263 | 2266 |
| Total | 212 | 2274 | 2486 |
| % Concordant (95% CI) | 98.6 (95.9 to 99.7) | 99.5 (99.1 to 99.8) | 99.4 (99.1 to 99.8) |
| Neisseria gonorrhoeae | |||
| Positive | 145 | 2 | 147 |
| Negative | 0 | 2339 | 2339 |
| Total | 145 | 2341 | 2486 |
| % Concordant (95% CI) | 100.0 (97.5 to 100.0) | 99.9 (99.7 to 100.0) | 99.9 (99.7 to 100.0) |
NAAT, nucleic acid amplification test.