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. 2020 Nov 2:aqaa221. doi: 10.1093/ajcp/aqaa221

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© American Society for Clinical Pathology, 2020. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Comparison of the Truvian Easy Check and Roche Elecsys anti-SARS-CoV-2 antibody assays. A total of 140 patient samples (99 COVID-19-positive, PCR-confirmed samples and 41 prepandemic volunteer samples) were tested using both the Easy Check and Roche Elecsys assays, yielding an overall concordance rate of 98.6% between the two serologic tests. Among the 99 COVID-19-positive, PCR-confirmed samples, there were 2 samples for which the Easy Check assay resulted as positive, whereas the Roche Elecsys assay resulted as negative.