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10.1016/j.bios.2021.113111

http://scihub22266oqcxt.onion/10.1016/j.bios.2021.113111
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suck abstract from ncbi


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pmid33743492      Biosens+Bioelectron 2021 ; 180 (ä): 113111
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  • Hitting the diagnostic sweet spot: Point-of-care SARS-CoV-2 salivary antigen testing with an off-the-shelf glucometer #MMPMID33743492
  • Singh NK; Ray P; Carlin AF; Magallanes C; Morgan SC; Laurent LC; Aronoff-Spencer ES; Hall DA
  • Biosens Bioelectron 2021[May]; 180 (ä): 113111 PMID33743492show ga
  • Significant barriers to the diagnosis of latent and acute SARS-CoV-2 infection continue to hamper population-based screening efforts required to contain the COVID-19 pandemic in the absence of widely available antiviral therapeutics or vaccines. We report an aptamer-based SARS-CoV-2 salivary antigen assay employing only low-cost reagents ($3.20/test) and an off-the-shelf glucometer. The test was engineered around a glucometer as it is quantitative, easy to use, and the most prevalent piece of diagnostic equipment globally, making the test highly scalable with an infrastructure that is already in place. Furthermore, many glucometers connect to smartphones, providing an opportunity to integrate with contact tracing apps, medical providers, and electronic health records. In clinical testing, the developed assay detected SARS-CoV-2 infection in patient saliva across a range of viral loads - as benchmarked by RT-qPCR - within 1 h, with 100% sensitivity (positive percent agreement) and distinguished infected specimens from off-target antigens in uninfected controls with 100% specificity (negative percent agreement). We propose that this approach provides an inexpensive, rapid, and accurate diagnostic for distributed screening of SARS-CoV-2 infection at scale.
  • |*Point-of-Care Testing[MESH]
  • |Adult[MESH]
  • |Antigens, Viral/*analysis[MESH]
  • |Biosensing Techniques/*methods[MESH]
  • |COVID-19 Serological Testing/*methods[MESH]
  • |COVID-19 Testing[MESH]
  • |COVID-19/*diagnosis[MESH]
  • |Coronavirus Nucleocapsid Proteins/analysis[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Male[MESH]
  • |Phosphoproteins/analysis[MESH]
  • |SARS-CoV-2/*immunology/isolation & purification[MESH]
  • |SELEX Aptamer Technique[MESH]
  • |Saliva/*virology[MESH]
  • |Sensitivity and Specificity[MESH]


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