The diagnostic sensitivity and specificity of the CE-IVD-marked artus CT/NG QS-RGQ Kit were compared with the Abbott CT/NG assay. The artus CT/NG QS-RGQ Kit showed a diagnostic specificity of 99.8% and sensitivity of 98.1% for CT and a diagnostic specificity of 99.8% and sensitivity of 96.3% for NG compared to the Abbott CT/NG assay.
Excellent detection limit for swabs and urine
For swabs, the analytical detection limit (LOD) of the artus CT/NG QS-RGQ Kit, in consideration of the purification, was determined using a dilution series of C. trachomatis and N. gonorrhoeae cells spiked in eNAT medium in combination with the extraction on the QIAsymphony SP. The LOD gave a 95% probability that 5 EB/ml C. trachomatis and 3 CFU/ml of N. gonorrhoeae will be detected (see table below).
For urine, the LOD of the artus CT/NG QS-RGQ Kit, in consideration of the purification, was determined using a dilution series of C. trachomatis and N. gonorrhoeae cells spiked in urine samples containing eNAT as stabilization reagent. The LOD gave a 95% probability that 7.65 EB/ml C. trachomatis and 6.89 CFU/ml N. gonorrhoeae will be detected (see table below).
Excellent detection limit Pathogen | Swabs | Urine |
C. trachomatis | 5 EB/ml | 8 EB/ml |
N. gonorrhoeae | 3 CFU/ml | 7 CFU/ml |