LDQA results in comparison with resolved data from 1028 urines for C trachomatis and N gonorrhoeae
| C trachomatis results | N gonorrhoeae results | ||||||||
| LDQA CT result | LDQA NG result | ||||||||
| Positive | Negative | Positive | Negative | ||||||
| Resolved CT result | Positive | 88 | 0 | 88 | Resolved NG result | Positive | 17 | 0 | 17 |
| Negative | 1 | 937 | 938 | Negative | 0 | 1011 | 1011 | ||
| 89 | 937 | 1026* | 17 | 1011 | 1028 | ||||
↵* Two samples were excluded due to repeatedly inhibitory COBAS and Artus results.
Laboratory-developed quadruplex assay (LDQA) C trachomatis (CT) sensitivity 100%, specificity 99.9%, kappa value 0.99, positive predictive value (PPV) 98.9%, negative predictive value (NPV) 100%.
LDQA N gonorrhoeae (NG) sensitivity 100%, specificity 100%, kappa value 1.00, PPV 100%, NPV 100%.