Table 5.

Comparison of Clinical Performance of the Elecsys Anti–SARS-CoV-2 Antibody Assay Assuming 3%, 5%, or 10% Disease Prevalence

PCR Positive	3%		5%		10%
	0-13 Days, %	≥14 Days, %	0-13 Days, %	≥14 Days, %	0-13 Days, %	≥14 Days, %
Sensitivity	77.50	94.74	77.50	94.74	77.50	94.74
Specificity	100	100	100	100	100	100
Positive predictive value	100	100	100	100	100	100
Negative predictive value	99.31	99.84	98.83	99.72	97.56	99.42
Accuracy	99.33	99.84	98.88	99.74	97.75	99.47

PCR, polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.