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10.3390/v13040557

http://scihub22266oqcxt.onion/10.3390/v13040557
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33810324!8066647!33810324
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suck abstract from ncbi


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pmid33810324      Viruses 2021 ; 13 (4): ä
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  • Adjusting the Cut-Off and Maximum Pool Size in RT-qPCR Pool Testing for SARS-CoV-2 #MMPMID33810324
  • Costa MS; Sato HI; Rocha RP; Carvalho AF; Guimaraes NS; Machado EL; Alves CRL; Teixeira SMR; Takahashi RHC; Tupinambas U; da Fonseca FG
  • Viruses 2021[Mar]; 13 (4): ä PMID33810324show ga
  • Reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) to detect SARS-CoV-2 RNA is an essential test to monitor the occurrence of COVID-19. A methodology is proposed for the determination of maximum pool size and adjustments of cut-off values of cycle threshold (Ct in RT-qPCR pool testing, to compensate for the dilution caused by pooling. The trade-off between pool size and test sensitivity is stated explicitly. The procedure was designed to ensure that samples that would be detectable in individual testing remain detectable in pool testing. The proposed relaxation in cut-off is dependent on the pool size, allowing a relatively tight correction to avoid loss of detection of positive samples. The methodology was evaluated in a study of pool testing of adults attending a public emergency care unit, reference for COVID-19 in Belo Horizonte, Brazil, and presenting flu-like symptoms. Even samples on the edge of detectability in individual testing were detected correctly. The proposed procedure enhances the consistency of RT-qPCR pool testing by enforcing that the scales of detectability in pool processing and in individual sample processing are compatible. This may enhance the contribution of pool testing to large-scale testing for COVID-19.
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |COVID-19 Nucleic Acid Testing/*methods/standards[MESH]
  • |COVID-19/diagnosis/*virology[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Real-Time Polymerase Chain Reaction/*methods/standards[MESH]
  • |SARS-CoV-2/*genetics/isolation & purification/physiology[MESH]


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