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10.1038/s41598-021-81518-8

http://scihub22266oqcxt.onion/10.1038/s41598-021-81518-8
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33479389!7819982!33479389
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suck abstract from ncbi


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pmid33479389      Sci+Rep 2021 ; 11 (1): 1873
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  • Development and comparison of novel multiple cross displacement amplification (MCDA) assays with other nucleic acid amplification methods for SARS-CoV-2 detection #MMPMID33479389
  • Luu LDW; Payne M; Zhang X; Luo L; Lan R
  • Sci Rep 2021[Jan]; 11 (1): 1873 PMID33479389show ga
  • The development of alternative isothermal amplification assays including multiple cross displacement amplification (MCDA) may address speed and portability limitations of real-time PCR (rt-PCR) methods for SARS-CoV-2 detection. We developed a novel SARS-CoV-2 MCDA assay and compared its speed and sensitivity to loop-mediated isothermal amplification (LAMP) and rt-PCR. Two MCDA assays targeting SARS-CoV-2 N gene and ORF1ab were designed. The fastest time to detection and sensitivity of MCDA was compared to LAMP and rt-PCR using DNA standards and transcribed RNA. For the N gene, MCDA was faster than LAMP and rt-PCR by 10 and 20 min, respectively with fastest time to detection at 5.2 min. rt-PCR had the highest sensitivity with the limit of detection at 10 copies/microl compared with MCDA (100 copies/microl) and LAMP (500 copies/microl). For ORF1ab, MCDA and LAMP had similar speed with fastest time to detection at 9.7 and 8.4 min, respectively. LAMP was more sensitive for ORF1ab detection with 50 copies/microl compared to MCDA (500 copies/microl). In conclusion, different nucleic acid amplification methods provide different advantages. MCDA is the fastest nucleic acid amplification method for SARS-CoV-2 while rt-PCR is the most sensitive. These advantages should be considered when determining the most suitable nucleic acid amplification methods for different applications.
  • |Biological Assay/methods[MESH]
  • |COVID-19 Testing/methods[MESH]
  • |COVID-19/*diagnosis/genetics/*virology[MESH]
  • |Clinical Laboratory Techniques/methods[MESH]
  • |Coronavirus Nucleocapsid Proteins/genetics[MESH]
  • |Humans[MESH]
  • |Molecular Diagnostic Techniques/methods[MESH]
  • |Nucleic Acid Amplification Techniques/*methods[MESH]
  • |Phosphoproteins/genetics[MESH]
  • |Polyproteins/genetics[MESH]
  • |Real-Time Polymerase Chain Reaction/methods[MESH]
  • |SARS-CoV-2/genetics/*isolation & purification[MESH]
  • |Sensitivity and Specificity[MESH]


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