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10.1007/s00604-021-04896-w

http://scihub22266oqcxt.onion/10.1007/s00604-021-04896-w
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suck abstract from ncbi


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pmid34282508      Mikrochim+Acta 2021 ; 188 (8): 262
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  • Ultrasensitive, high-throughput, and rapid simultaneous detection of SARS-CoV-2 antigens and IgG/IgM antibodies within 10 min through an immunoassay biochip #MMPMID34282508
  • Wang C; Wang C; Qiu J; Gao J; Liu H; Zhang Y; Han L
  • Mikrochim Acta 2021[Jul]; 188 (8): 262 PMID34282508show ga
  • COVID-19 is now a severe threat to global health. Facing this pandemic, we developed a space-encoding microfluidic biochip for high-throughput, rapid, sensitive, simultaneous quantitative detection of SARS-CoV-2 antigen proteins and IgG/IgM antibodies in serum. The proposed immunoassay biochip integrates the advantages of graphene oxide quantum dots (GOQDs) and microfluidic chip and is capable of conducting multiple SARS-CoV-2 antigens or IgG/IgM antibodies of 60 serum samples simultaneously with only 2 muL sample volume of each patient. Fluorescence intensity of antigens and IgG antibody detection at emission wavelength of ~680 nm was used to quantify the target concentration at excitation wavelength of 632 nm, and emission wavelength of ~519 nm was used during the detection of IgM antibodies at excitation wavelength of 488 nm. The method developed has a large linear quantification detection regime of 5 orders of magnitude, an ultralow detection limit of ~0.3 pg/mL under optimized conditions, and less than 10-min qualitative detection time. The proposed biosensing platform will not only greatly facilitate the rapid diagnosis of COVID-19 patients, but also provide a valuable screening approach for infected patients, medical therapy, and vaccine recipients.
  • |*Immunoassay[MESH]
  • |Antigen-Antibody Reactions[MESH]
  • |Antigens, Viral/*blood/immunology[MESH]
  • |Humans[MESH]
  • |Immunoglobulin G/*blood/immunology[MESH]
  • |Immunoglobulin M/*blood/immunology[MESH]
  • |Nanoparticles/chemistry[MESH]
  • |Particle Size[MESH]
  • |SARS-CoV-2/immunology/*isolation & purification[MESH]


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