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10.1016/j.bios.2020.112679

http://scihub22266oqcxt.onion/10.1016/j.bios.2020.112679
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suck abstract from ncbi


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pmid33069957      Biosens+Bioelectron 2021 ; 171 (ä): 112679
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  • Multiplexed detection and quantification of human antibody response to COVID-19 infection using a plasmon enhanced biosensor platform #MMPMID33069957
  • Cady NC; Tokranova N; Minor A; Nikvand N; Strle K; Lee WT; Page W; Guignon E; Pilar A; Gibson GN
  • Biosens Bioelectron 2021[Jan]; 171 (ä): 112679 PMID33069957show ga
  • The 2019 SARS CoV-2 (COVID-19) pandemic has illustrated the need for rapid and accurate diagnostic tests. In this work, a multiplexed grating-coupled fluorescent plasmonics (GC-FP) biosensor platform was used to rapidly and accurately measure antibodies against COVID-19 in human blood serum and dried blood spot samples. The GC-FP platform measures antibody-antigen binding interactions for multiple targets in a single sample, and has 100% selectivity and sensitivity (n = 23) when measuring serum IgG levels against three COVID-19 antigens (spike S1, spike S1S2, and the nucleocapsid protein). The GC-FP platform yielded a quantitative, linear response for serum samples diluted to as low as 1:1600 dilution. Test results were highly correlated with two commercial COVID-19 antibody tests, including an enzyme linked immunosorbent assay (ELISA) and a Luminex-based microsphere immunoassay. To demonstrate test efficacy with other sample matrices, dried blood spot samples (n = 63) were obtained and evaluated with GC-FP, yielding 100% selectivity and 86.7% sensitivity for diagnosing prior COVID-19 infection. The test was also evaluated for detection of multiple immunoglobulin isotypes, with successful detection of IgM, IgG and IgA antibody-antigen interactions. Last, a machine learning approach was developed to accurately score patient samples for prior COVID-19 infection, using antibody binding data for all three COVID-19 antigens used in the test.
  • |*Clinical Laboratory Techniques[MESH]
  • |Antibodies, Viral/*blood/immunology[MESH]
  • |Betacoronavirus/*immunology/isolation & purification[MESH]
  • |Biosensing Techniques/*instrumentation[MESH]
  • |COVID-19[MESH]
  • |COVID-19 Testing[MESH]
  • |Coronavirus Infections/*blood/diagnosis/immunology[MESH]
  • |Dried Blood Spot Testing[MESH]
  • |Equipment Design[MESH]
  • |Fluorescence[MESH]
  • |Humans[MESH]
  • |Immunoglobulin G/blood/immunology[MESH]
  • |Lab-On-A-Chip Devices[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/*blood/diagnosis/immunology[MESH]
  • |SARS-CoV-2[MESH]


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