Table 5.

Precision analysis of the SARS-COV-2 antigen quantitative detection kit (ELISA).

	Within-day precision			Day to day precision
	S1	S2	S3	S1	S2	S3
Mean value(pg/mL)	6.49	41.15	163.10	6.51	41.13	166.33
SD(pg/mL)	0.56	2.68	9.46	0.62	3.07	10.36
CV(%)	8.65%	6.51%	5.80%	9.52%	7.47%	6.23%