Abstract:Abstract: ObjectiveTo establish a detection method for common pathogens causing reproductive tract infections using centrifugal mi-crofluidic technology based on the column for nucleic acid extraction in column. MethodsThe specific primer probes were designed and column-based nucleic acid extraction combined qPCRamplification detection were integrated onto a centrifugal microfluidic chip to achieve fully automated detection of 9 common reproductive tract pathogens Mycoplasma hominis,human herpes simplex virus,Chlamydia trachomatis,Ureaplasma urealyticum,Trichomonas vaginalis,Neisseria gonorrhoeae,Herpes simplex virusI,Mycoplasma genitalium,and Treponema pallidum. The minimum detection limit,specificity,repeatability and linearity of this method were evalua- ted, and 255 positive and 45 negative clinical specimens were tested to verify the accuracy. Results The minimum detection limit of the centrifugal microfluidic chip was500 copies/mL. No cross-reactivity with common reproductive tract pathogens was found. The pre-cision was less than 5%,and good linearity was shown(R2>0.99). Compared with the conventional detection methods,the sensitivity,specificity,positivepredictivevaluenegativepredictivevalueandoverallcoincidencerate of thecentrifugalmicrofluidicchipwereall higher than 96.2%. There was no statistically significant difference between the results of the two methods in the detections of 9 common reproductive tract pathogens(P>O.05),indicating excellent consistency(all Kappa value>0.96).ConclusionThe centrifugal mi-crofluidic technology based on the nucleic acid extraction using the column has shown excellent sensitivity,repeatability,specificity and accuracy for detectingcommonpathogensin reproductivetractinfection,indicating significantclinical application potential.