The SARS-CoV-2 pandemic is ongoing worldwide, causing prolonged pressure on molecular diagnostics. Viral antigen (Ag) assays have several advantages, ranging from lower cost to shorter turnaround time to detection. Given the rare occurrence of low-load viremia, antigen assays for SARS-CoV-2 have focused on nasopharyngeal swab and saliva as biological matrices, but their effectiveness must be validated. We assayed here the performances of the novel quantitative Liaison® SARS-CoV-2 Ag assay on 119 nasopharyngeal swabs and obtained results were compared with Hologic Panther and Abbott m2000 RT-qPCR. The Ag assay demonstrated a good correlation with viral load, shorter turnaround time, and favorable economics. The best performance was obtained in the acute phase of disease.

Performance Assessment of the LIAISON® SARS-CoV-2 Antigen Assay On Nasopharyngeal Swabs

Baj, Andreina
Primo
;
Tamborini, Antonio;Novazzi, Federica;Genoni, Angelo;Azzi, Lorenzo;Dalla Gasperina, Daniela;Maggi, Fabrizio
Ultimo
2021-01-01

Abstract

The SARS-CoV-2 pandemic is ongoing worldwide, causing prolonged pressure on molecular diagnostics. Viral antigen (Ag) assays have several advantages, ranging from lower cost to shorter turnaround time to detection. Given the rare occurrence of low-load viremia, antigen assays for SARS-CoV-2 have focused on nasopharyngeal swab and saliva as biological matrices, but their effectiveness must be validated. We assayed here the performances of the novel quantitative Liaison® SARS-CoV-2 Ag assay on 119 nasopharyngeal swabs and obtained results were compared with Hologic Panther and Abbott m2000 RT-qPCR. The Ag assay demonstrated a good correlation with viral load, shorter turnaround time, and favorable economics. The best performance was obtained in the acute phase of disease.
http://www.newmicrobiologica.org/en/ahead_of_print/
COVID-19; SARS-CoV-2; Spike; antigen assay; molecular assays
Baj, Andreina; Zago, Cristian; Tamborini, Antonio; Colombo, Alberto; Cassani, Gianluca; Rossi, Agostino; Pasciuta, Renee; Novazzi, Federica; Prestia, Martina; Capuano, Riccardo; Genoni, Angelo; Azzi, Lorenzo; Dalla Gasperina, Daniela; Spezia, Pietro Giorgio; Focosi, Daniele; Maggi, Fabrizio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2123338
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