• J. Med. Virol. · Dec 2021

    Evaluation of a chemiluminescent enzyme immunoassay-based high-throughput SARS-CoV-2 antigen assay for the diagnosis of COVID-19: The VITROS® SARS-CoV-2 Antigen Test.

    • Nanako Matsuzaki, Yuta Orihara, Masahiro Kodana, Yutaro Kitagawa, Masaru Matsuoka, Rieko Kawamura, Shinichi Takeuchi, Kazuo Imai, Norihito Tarumoto, Shigefumi Maesaki, and Takuya Maeda.
    • Department of Clinical Laboratory, Saitama Medical University Hospital, Saitama, Japan.
    • J. Med. Virol. 2021 Dec 1; 93 (12): 6778-6781.

    AbstractA high-throughput, fully automated antigen detection test for SARS-CoV-2 is a viable alternative to reverse-transcription polymerase chain reaction (RT-qPCR) for mass screening during outbreaks. In this study, we compared RT-qPCR for viral load and the VITROS® SARS-CoV-2 Antigen Test with reference to the results of the LUMIPULSE® SARS-CoV-2 Ag Test. Of 128 nasopharyngeal swab specimens taken from patients suspected of being infected with SARS-CoV-2, 49 were positive and 79 were negative according to RT-qPCR. Consistent dose-dependent detection with VITROS® assay was successfully achieved when using nasopharyngeal swab specimens with Ct values of 32.0 or lesser, whereas the CLEIA-based LUMIPULSE® assay was able to detect lower viral loads compared with the VITROS® assay. Our results show that the performance of the VITROS® assay was satisfactory for the diagnosis of contagious COVID-19 patients in the clinical setting. Highlights The performance of the VITROS® SARS-CoV-2 Antigen Test was sufficient for the diagnosis of contagious COVID-19. This test showed high sensitivity and specificity in the detection of SARS-CoV-2 in samples with a Ct value of 32 or less.© 2021 Wiley Periodicals LLC.

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