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- W2891955057 abstract "PCR enables sensitive and specific detection of infectious disease agents, but application in point-of-care diagnostic testing remains scarce. A compact tool that runs PCR assays in less than a few minutes and that relies on mass-producible, disposable reactors could revolutionize while-you-wait molecular testing. We here exploit well-established semiconductor manufacturing processes to produce silicon ultra-fast quantitative PCR (UF-qPCR) chips that can run PCR protocols with limited assay optimization. A total of 110 clinical samples were analyzed for the detection of group B streptococci using both a validated benchtop and an on-chip qPCR assay. For the on-chip assay, the total reaction time was reduced after optimization to less than 5 min. The standard curve, spanning a concentration range of 5 log units, yielded a PCR efficiency of 94%. The sensitivity obtained was 96% (96/100; CI: 90–98%) and the specificity 70% (7/10; CI: 40–90%). We show that if melting analyses would be integrated, the obtained sensitivity would drop slightly to 93% (CI: 86–96%), while the specificity would increase to 100% (CI: 72% − 100%). In comparison to the benchtop reference qPCR assay performed on a LightCycler©96, the on-chip assay demonstrated a highly significant qualitative (Spearman's rank correlation) and quantitative (linear regression) correlation. Using a mass-producible qPCR chip and limited assay optimization, we were able to develop a validated qPCR protocol that can be carried out in less than five minutes. The analytical performance of the microchip-based UF-qPCR system was shown to match that of a benchtop assay. This is the first report to provide UF-qPCR validation using clinical samples. We demonstrate that qPCR-based while-you-wait testing is feasible without jeopardizing assay performance." @default.
- W2891955057 created "2018-09-27" @default.
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- W2891955057 date "2019-01-01" @default.
- W2891955057 modified "2023-10-05" @default.
- W2891955057 title "Ultra-fast, sensitive and quantitative on-chip detection of group B streptococci in clinical samples" @default.
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- W2891955057 doi "https://doi.org/10.1016/j.talanta.2018.09.041" @default.
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