Table 3A.
Rates of positive results (sensitivity) of 5 commercial assays for SARS-CoV-2 antibodiesa. Anti–SARS-CoV-2 ELISA (IgG) EUROIMMUN and Anti–SARS-CoV-2 ELISA (IgA) EUROIMMUN were not considered separately. Rather, the combination of both tests was evaluated.
| Assay/Db | Nc | SARS-CoV-2 IgG Abbott Diagnostics (Abbott-IgG) |
Anti–SARS-CoV-2 Roche (Roche-IgT) |
Anti–SARS-CoV-2 ELISA (IgG) EUROIMMUN (EUROIMMUN-IgG) |
Anti–SARS-CoV-2 ELISA (IgA) EUROIMMUN (EUROIMMUN-IgA) |
Anti–SARS-CoV-2 ELISA (IgA) and (IgG) EUROIMMUN combinedc (EUROIMMUN-IgA/G) |
LIASON SARS-CoV-2 S1/S2 IgGd (DiaSorin-IgG) |
|---|---|---|---|---|---|---|---|
| 0 | 16 | 4 (25) | 3 (19) | 2 (13) | 4 (25) | 4 (25) | 3 (19) |
| 1 | 13 | 1 (8) | 0 (0) | 0 (0) | 1 (8) | 1 (8) | 2 (15) |
| 3 | 26 | 9 (35) | 8 (31) | 6 (23) | 10 (38) | 12 (46) | 4 (15) |
| 5 | 13 (12) | 7 (54) | 7 (54) | 6 (46) | 7 (54) | 7 (54) | 5 (42) |
| 6 | 11 | 7 (64) | 7 (64) | 6 (55) | 7 (64) | 7 (64) | 8 (73) |
| 7 | 11 (10) | 7 (64) | 6 (55) | 4 (36) | 8 (73) | 8 (73) | 5 (50) |
| 9 | 18 | 14 (78) | 15 (83) | 14 (78) | 16 (89) | 16 (89) | 14 (78) |
| 10 | 11 (10) | 10 (91) | 10 (91) | 9 (82) | 11 (100) | 11 (100) | 9 (90) |
| 12 | 18 (17) | 16 (94) | 17 (100) | 13 (76) | 17 (100) | 17 (100) | 14 (88) |
| 14 | 15 (14) | 15 (100) | 14 (93) | 13 (87) | 14 (93) | 14 (93) | 13 (93) |
| 16 | 14 (13) | 13 (93) | 13 (93) | 13 (93) | 13 (93) | 13 (93) | 12 (92) |
| 20 | 10 | 10 (100) | 10 (100) | 10 (100) | 10 (100) | 10 (100) | 10 (100) |
| 35 | 10 | 9 (90) | 10 (100) | 10 (100) | 10 (100) | 10 (100) | 10 (100) |
| 44 | 5 | 4 (80) | 5 (100) | 5 (100) | 5 (100) | 5 (100) | 5 (100) |
The cells contain absolute numbers and percentages in brackets.
If less than 10 samples were available for a specific day, samples from several days were combined. The displayed day number is then the mean for the group.
The Anti–SARS-CoV-2 ELISA (IgG) EUROIMMUN and Anti–SARS-CoV-2 ELISA (IgA) EUROIMMUN were not considered separately. Rather, the combined test was considered positive if any of the tests was positive.
There are 6 less samples for LIASON SARS-CoV-2 S1/S2 IgG, the number of samples for this test are in brackets in the second column.