Multicentric Evaluation of a Novel Point of Care Electrochemical ELISA Platform for SARS-CoV-2 Specific IgG and IgM Antibody Assay

Author:

Kumar Vinay,Ghosh Kanad,Chandran Anagha,Panwar Sachin,Bhat Ananthram,Konaje Shreenivas,Das Saroj,Srikanta S,Jaganathan Latha,Prasad Sujay,Venkatesh D B,Shivaram C.,Krishnaswamy P R,Bhat Navakanta

Abstract

AbstractNew diagnostics technologies for the efficient detection and quantification of SARS-CoV-2 Antibodies is very crucial to manage the COVID-19 pandemic, especially in the context of emerging vaccination paradigms. Herein, we report on a novel point-of-care Electrochemical ELISA platform with disposable screen printed electrodes functionalized with SARS-CoV-2 Spike Glycoprotein S1, to enable fast and accurate quantitative estimation of total antibody concentration (IgG and IgM) in clinical samples. The quantification is performed with a comparison of electrochemical redox current against the current produced by the spiked monoclonal antibodies with known concentration. The assay is validated through multicentric evaluation against 3 different FDA authorized Laboratory standard techniques, using both EDTA whole blood and serum samples. We demonstrate that the proposed assay has excellent sensitivity and specificity, making it a suitable candidate for epidemiological surveys and quantification of antibodies in COVID-19 vaccination programs.

Publisher

Cold Spring Harbor Laboratory

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