ArticleBiosensors & bioelectronics2021
Facile and rapid detection of SARS-CoV-2 antibody based on a noncompetitive fluorescence polarization immunoassay in human serum samples.
Article in Biosensors & bioelectronics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.
- An Experimental Framework for Developing Point-of-Need Biosensors: Connecting Bio-Layer Interferometry and Electrochemical Impedance Spectroscopy.Biosensors · 2022Pooled it
- Disease Biomarker Detection Using Fluorescence Polarization Assays: Principles and Clinical Applications.Diagnostics (Basel, Switzerland) · 2026Review
- Noncompetitive Fluorescence Polarization Aptamer Assay for Detecting SARS-CoV‑2 Variants.ACS omega · 2025Article
- Hydrogel-based fluorescence assay kit for simultaneous determination of ceftazidime and avibactam.Mikrochimica acta · 2024Article
- Fluorescence Polarization Assay for Infection Diagnostics: A Review.Molecules (Basel, Switzerland) · 2024Review
- Rapid determination of domoic acid in seafood by fluorescence polarization immunoassay using a portable analyzer.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2023Article
- Article
- One-pot and rapid detection of SARS-CoV-2 viral particles in environment using SERS aptasensor based on a locking amplifier.Sensors and actuators. B, Chemical · 2022Article
- Microfluidic particle dam for direct visualization of SARS-CoV-2 antibody levels in COVID-19 vaccinees.Science advances · 2022Article
Corrections and comments
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Authors and funding
14 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Antibody detection methods for viral infections have received broad attention due to the COVID-19 pandemic. In addition, there remains an ever-increasing need to quantitatively evaluate the immune response to develop vaccines and treatments for COVID-19. Here, we report an analytical method for the rapid and quantitative detection of SARS-CoV-2 antibody in human serum by fluorescence polarization immunoassay (FPIA). A recombinant SARS-CoV-2 receptor binding domain (RBD) protein labeled with HiLyte Fluor 647 (F-RBD) was prepared and used for FPIA. When the anti-RBD antibody in human serum binds to F-RBD, the degree of polarization (P) increases by suppressing the rotational diffusion of F-RBD. The measurement procedure required only mixing a reagent containing F-RBD with serum sample and measuring the P value with a portable fluorescence polarization analyzer after 15 min incubation. We evaluated analytical performance of the developed FPIA system using 30 samples: 20 COVID-19 positive sera and 10 negative sera. The receiver operating characteristic curve drawn with the obtained results showed that this FPIA system had high accuracy for discriminating COVID-19 positive or negative serum (AUC = 0.965). The total measurement time was about 20 min, and the serum volume required for measurement was 0.25 μL. Therefore, we successfully developed the FPIA system that enables rapid and easy quantification of SARS-CoV-2 antibody. It is believed that our FPIA system will facilitate rapid on-site identification of infected persons and deepen understanding of the immune response to COVID-19.
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