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10.3390/v13040615

http://scihub22266oqcxt.onion/10.3390/v13040615
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33918447!8067048!33918447
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suck abstract from ncbi


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pmid33918447      Viruses 2021 ; 13 (4): ä
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  • Evaluation of an Automated High-Throughput Liquid-Based RNA Extraction Platform on Pooled Nasopharyngeal or Saliva Specimens for SARS-CoV-2 RT-PCR #MMPMID33918447
  • Chu AW; Yip CC; Chan WM; Ng AC; Chan DL; Siu RH; Chung CYT; Ng JP; Kittur H; Mosley GL; Poon RW; Chiu RY; To KK
  • Viruses 2021[Apr]; 13 (4): ä PMID33918447show ga
  • SARS-CoV-2 RT-PCR with pooled specimens has been implemented during the COVID-19 pandemic as a cost- and manpower-saving strategy for large-scale testing. However, there is a paucity of data on the efficiency of different nucleic acid extraction platforms on pooled specimens. This study compared a novel automated high-throughput liquid-based RNA extraction (LRE) platform (PHASIFY) with a widely used magnetic bead-based total nucleic acid extraction (MBTE) platform (NucliSENS((R)) easyMAG((R))). A total of 60 pools of nasopharyngeal swab and 60 pools of posterior oropharyngeal saliva specimens, each consisting of 1 SARS-CoV-2 positive and 9 SARS-CoV-2 negative specimens, were included for the comparison. Real-time RT-PCR targeting the SARS-CoV-2 RdRp/Hel gene was performed, and GAPDH RT-PCR was used to detect RT-PCR inhibitors. No significant differences were observed in the Ct values and overall RT-PCR positive rates between LRE and MBTE platforms (92.5% (111/120] vs. 90% (108/120]), but there was a slightly higher positive rate for LRE (88.3% (53/60]) than MBTE (81.7% (49/60]) among pooled saliva. The automated LRE method is comparable to a standard MBTE method for the detection of SAR-CoV-2 in pooled specimens, providing a suitable alternative automated extraction platform. Furthermore, LRE may be better suited for pooled saliva specimens due to more efficient removal of RT-PCR inhibitors.
  • |*COVID-19 Nucleic Acid Testing[MESH]
  • |COVID-19/*diagnosis/epidemiology[MESH]
  • |Humans[MESH]
  • |Mass Screening[MESH]
  • |Nasopharynx/virology[MESH]
  • |RNA, Viral/genetics/isolation & purification[MESH]
  • |SARS-CoV-2/genetics/*isolation & purification[MESH]
  • |Saliva/virology[MESH]


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