. 2021 Aug 9;10(4):2381–2397. doi: 10.1007/s40121-021-00504-9

Table 2.

Sensitivity of the Elecsys Anti-SARS-CoV-2 immunoassay by time interval post-PCR confirmation

Time interval (days post-PCR confirmation)	Sensitivity, % (95% CI) n/N
0–6	33.33 (0.84–90.57) 1/3	40.00 (21.13–61.33) 10/25	47.83 (26.82–69.41) 11/23	43.14 (29.35–57.75) 22/51
7–13	80.00 (28.36–99.49) 4/5	81.82 (48.22–97.72) 9/11	85.29 (68.94–95.05) 29/34	84.00 (70.89–92.83) 42/50
≥ 14 (up to day 78)	98.94 (94.21–99.97) 93/94	85.71 (76.38–92.39) 72/84	97.56 (87.14–99.94) 40/41	93.61 (89.51–96.46) 205/219

Time interval (days post-PCR confirmation)

Sensitivity, % (95% CI)
n/N

Augsburg

Heidelberg

Berlin

All sites combined

0–6

33.33 (0.84–90.57)

1/3

40.00 (21.13–61.33)

10/25

47.83 (26.82–69.41)

11/23

43.14 (29.35–57.75)

22/51

7–13

80.00 (28.36–99.49)

4/5

81.82 (48.22–97.72)

9/11

85.29 (68.94–95.05)

29/34

84.00 (70.89–92.83)

42/50

≥ 14 (up to day 78)

98.94 (94.21–99.97)

93/94

85.71 (76.38–92.39)

72/84

97.56 (87.14–99.94)

40/41

93.61 (89.51–96.46)

205/219

CI confidence interval, PCR polymerase chain reaction, SARS-CoV-2 severe acute respiratory syndrome coronavirus 2