. 2021 Aug 30;100:108095. doi: 10.1016/j.intimp.2021.108095

Table 1.

Characteristics of anti-SARS-CoV-2 serological assays: target antigen, method, immunoglobulin class detected, cut-off value in arbitrary units (AU/mL), BAU conversion factor, cut-off value in BAU/mL and dynamic range.

MANUFACTURER	KIT ASSAY	TARGET ANTIGEN	METHOD	IMMUNOGLOBULIN DETECTED	CUT-OFF (AU/mL)	CONVERSION FACTOR (BAU/mL)	CUT-OFF (BAU/mL)	DYNAMIC RANGE* (BAU/mL)
Mindray	SARS-CoV-2 S-RBD IgG	S-RBD	CLIA	IgG	10	1.216	12.16	3.65–1216
Roche	Elecsys	S-RBD	ECLIA	IgA, IgM, IgG	0.80	1.288	0.823	0.40–243
Roche	anti-SARS-CoV-2 S	S-RBD	ECLIA	IgA, IgM, IgG	0.80	1.288	0.823	0.40–243
Snibe	Maglumi	S-RBD	CLIA	IgG	1	4.33	4.33	0.78–433
Snibe	SARS-CoV-2 S-RBD IgG	S-RBD	CLIA	IgG	1	4.33	4.33	0.78–433
DiaSorin	LIAISON SARS CoV-2	Trimeric S	CLIA	IgG	13	2.6	33.8	4.8–2080
DiaSorin	Trimeric S IgG	Trimeric S	CLIA	IgG	13	2.6	33.8	4.8–2080
Thermo Fisher	EliA SARS-CoV-2-Sp1 IgG	S1	FEIA	IgG	7 (7–10 borderline)	4	28 (28–40 borderline)	2.8–816
Euroimmun	Anti-SARS-CoV-2	S1	ELISA	IgG	8 (8–11 borderline)	3.2	25.6 (25.6–35.2 borderline)	3.2–384
Euroimmun	QuantiVac ELISA IgG	S1	ELISA	IgG	8 (8–11 borderline)	3.2	25.6 (25.6–35.2 borderline)	3.2–384

CLIA, chemiluminescence immunoassay; ECLIA, electrochemiluminescence immunoassay; ELISA, enzyme-linked immunosorbent assay; FEIA, fluorescence enzyme immunoassay.