Table 4:

Commercial assays

Instrument/Assay	Antigen	Isotype	Center/Institution	Regulatory Status
Abbott Alinity	Spike	IgM	Mount Sinai	FDA EUA granted
Abbott Architect	Spike, Nucleocapsid	IgG	Cedars-Sinai*	FDA EUA granted
Beckman Coulter Access	Spike	IgG	Arizona State University	FDA EUA granted
Beckman Coulter Access	Spike	IgM	Arizona State University	FDA EUA granted
DiaSorin Liaison	Spike	IgG	Feinstein/Northwell, Kaiser, The Ohio State University	FDA EUA granted
DiaSorin Liaison	Spike	IgM	Feinstein/Northwell	FDA EUA granted
Kantaro SeroKlir	Spike, RBD	IgG	Mount Sinai	FDA EUA granted
Kantaro Quantitative SARS-CoV-2	Spike, RBD	IgG	Mount Sinai	FDA EUA pending
Meso Scale Discovery	Spike, Nucleocapsid	IgG, IgM	University of Alabama - Birmingham, CVVR/BIDMC/Harvard, Johns Hopkins University, Stanford	RUO
Roche Elecsys Anti-SARS-CoV-2	Nucleocapsid	Total Ig	University of Minnesota, Feinstein/Northwell	FDA EUA granted
Roche Elecsys Anti-SARS-CoV-2 S	RBD	Total Ig	University of Minnesota, Feinstein/Northwell	FDA EUA granted
Siemens Atellica	Spike	Total Ig	Kaiser, The Ohio State University	FDA EUA granted

^*Samples sent to Abbott Diagnostics for testing

BIDMC: Beth Israel Deaconess Medical Center; CVVR: Center for Virology and Vaccine Research; EUA: Emergency use authorization; FDA: Food and Drug Administration; RBD: Receptor binding domain; RUO: Research use only