Table 5. Antibody detection by tests in COVID-19 patients (n = 97) in different time to test groups.
Tests | Quantitative test value median (25%;75% percentiles) | ||
---|---|---|---|
% of positive tests in subgroup | |||
7–14 days | 15–30 days | 31–57 days | |
n = 20 | n = 35 | n = 42 | |
SNIBE | 2.02 (0.23; 17.51) | 4.21 (0.8; 17.94) | 5.18 (1.19; 14.02) |
55 | 69 | 79 | |
Epitope | 0.65 (0.3; 1.03) | 0.73 (0.37; 0.96) | 0.62 (0.36; 0.87) |
80 | 89 | 86 | |
Euroimmun | 2.43 (0.68; 4.92)1,2 | 5.18 (2.32; 7.88)1 | 4.81 (2.40; 6.83)2 |
55a,b | 89a | 90b | |
Roche | 3.18 (1.15; 8.24)3,4 | 15.05 (6.02; 51.45)3 | 31.90 (5.39; 43.16)4 |
75 | 83 | 88 | |
Abbott | 4.27 (2.23; 6.77) | 6.15 (2.67; 7.76) | 5.88 (3.11; 7.65) |
85 | 86 | 83 | |
DiaSorin | 27 (6.46; 73.55)5,6 | 98.8 (28.7; 198)5 | 70.15 (30.2; 134)6 |
55c,d | 86c | 90d | |
LIPS S-RBD | 3.05 (1.85; 6.08)7,8 | 22.69 (9.31; 59.60)7 | 13.48 (4.68; 34.15)8 |
70 | 91 | 86 | |
LIPS N | 10.49 (4.14; 35.73) | 8.48 (3.38; 13.11)9 | 16.13 (9.12; 63.90)9 |
90 | 89 | 95 | |
Biosensor | NAe | NAe | NAe |
60 | 69 | 64 |
Statistical difference between quantitative data
1p = 0.006
2p = 0.01
3p = 0.003
4p<0.001
5p = 0.003
6p = 0.01
7p<0.001
8p<0.001
9p = 0.005, and between percentage of positive results
ap = 0.008
bp = 0.003
cp = 0.02
dp = 0.003
eNA–not applicable. Only qualitative interpretation (absence or presence of test line).