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Comparative Evaluation of RT-PCR kits Available in Sri Lanka for Diagnosis of COVID-19

感染微生物与疾病(英文) 2023年第3期5卷 152-158页

作者： kanchana P.Amarasinghe Arumugam Murugananthan Ponnuthurai T.Amalraajan Mithusha Thavaththurai Gayathri Ravindran kalamathy Murugananthan shakila k.gunathilake Department of Parasitology Faculty of MedicineUniversity of JaffnaJaffnaSri Lanka Department of Microbiology Faculty of MedicineUniversity of JaffnaJaffnaSri Lanka Department of Mathematics and Statistics Faculty of ScienceUniversity of JaffnaJaffnaSri Lanka

Identification of gene targets by real-time reverse transcriptase PCR(rRT-PCR)is considered as the gold standard for diagnosis of se-vere acute respiratory syndrome coronavirus 2(SARS-CoV-2)*** many commercial rRT-PCR kits are currently used in Sri Lanka,analytical performance of these kits have not been investigated ***,the objective of the present study was to evaluate the analytical performance of rRT-PCR kits used in the laboratory of the Faculty of Medicine,University of Jaffna(five kits).Performance of the five rRT-PCR kits selected for this study was compared with the CDC 2019-Novel Coronavirus(2019-nCoV)RT-PCR Diagnostic Panel as reference *** sensitivity,specificity,positive predictive value,negative predictive value and Cohen’sκcoefficient of the five different commercial kits were ***-CoV-2 positive(62)and negative(32)respiratory sam-ples collected respectively from symptomatic individuals and asymptomatic healthy individuals were used in this *** of the cycle threshold(Ct)values of the five commercial kits revealed *** them,the TaqPathTM kit showed the highest sensitivity(98.4%)and interrater reliability(0.976).The HBRT-COVID-19 kit showed the lowest sensitivity(91.9%),specificity(93.7%)and interrater reliability(0.838).Although the five RT-PCR kits exhibited varying sensitivity,specificity and Ct values,all of them are suitable for the routine diagnosis of SARS-CoV-2 infections as all values were higher than 90%.

关键词： COVID-19 diagnosis RT-PCR Ct value sensitivity specificity

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