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OBJECTIVES: The true prevalence and seropositivity of SARS-CoV-2 infection remains unknown, due to the number of asymptomatic infections and limited access to high-performance antibody tests. To fill this gap, the clinical performance of a point-of-care SARS-CoV-2 Rapid Antibody Assay, a chromatographic immunoassay for detection of IgM/IgG antibodies, in near-patient settings was assessed. METHODS: 42 Anti-SARS-Cov-2 positive (CoV+) and 92 Anti-SARS-Covid-2 negative (CoV-) leftover samples from before December 2019 were assessed, using the Elecsys® Anti-SARS-CoV-2 as the reference assay. Analytical specificity was tested using leftover samples collected before December 2019 from patients with common cold symptoms. RESULTS: The SARS-CoV-2 Rapid Antibody Test was 100.0% (95% CI 91.59–100.00) sensitive and 96.74% (95% CI 90.77–99.32) specific, with 0.00% assay failure rate. No cross-reactivity was observed against the common cold panel. Method comparison was additionally conducted by two external laboratories, using 100 CoV+/275 CoV- samples, also comparing whole blood versus plasma matrix. The comparison demonstrated 96.00% positive/96.36% negative percent agreement for plasma with the Elecsys Anti-SARS-CoV-2 and 99.20% percent overall agreement between whole blood and EDTA plasma. CONCLUSION: The SARS-CoV-2 Rapid Antibody Test demonstrated similar performance to the manufacturer’s data and a centralized automated immunoassay, with no cross-reactivity with common cold panels.
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?:doi
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10.1016/j.ijid.2020.11.164
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document_parses/pdf_json/d1b77ce5c42cf3ee63a776131bef62355a85eea1.json
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document_parses/pmc_json/PMC7677675.xml.json
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Clinical Performance Evaluation of a SARS-CoV-2 Rapid Antibody Test for Determining Past Exposure to SARS-CoV-2
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