Table 5.
Comparative evaluation of the analytical sensitivity of five SARS-CoV-2 rapid antigen tests stratified for Ct/Cp value ranges based on studies by the Paul-Ehrlich-Institute (“non-Delta/non-Omicron”*) and the current study for respiratory samples containing Omicron-BA.1 and -BA.2
| Sample size | Ct < 25 (%) | Ct 25–30 (%) | Ct > 30 (%) | Overall sensitivity (%) | |
|---|---|---|---|---|---|
| Clongene | |||||
| Non-Delta/non-Omicrona | n.a | 94.4 | 34.8 | 0.0 | 50.0 |
| Omicron-BA.1 | 70 | 91.1 | 21.7 | 50.0 | 67.1 |
| Omicron-BA.2 | 70 | 76.1 | 18.2 | 0.0 | 56.5 |
| nal von minden | |||||
| Non-Delta/non-Omicrona | n.a | 83.3 | 13.0 | 0.0 | 36.0 |
| Omicron-BA.1 | 70 | 86.7 | 8.7 | 0.0 | 58.6 |
| Omicron-BA.2 | 70 | 76.6 | 22.7 | 0.0 | 58.6 |
| Glallergen | |||||
| Non-Delta/non-Omicrona | n.a | 100.0 | 100.0 | 60.0 | 92.0 |
| Omicron-BA.1 | 70 | 71.1 | 8.7 | 0.0 | 48.6 |
| Omicron-BA.2 | 70 | 68.1 | 13.6 | 0.0 | 50.0 |
| Saier | |||||
| Non-Delta/non-Omicrona | n.a | 100.0 | 100.0 | 80.0 | 96.0 |
| Omicron-BA.1 | 70 | 80.0 | 13.0 | 0.0 | 55.7 |
| Omicron-BA.2 | 70 | 74.5 | 18.2 | 0.0 | 55.7 |
| Egens | |||||
| Non-Delta/non-Omicrona | n.a | 100.0 | 100.0 | 50.0 | 90.0 |
| Omicron-BA.1 | 70 | 52.3 | 13.0 | 0.0 | 37.7 |
| Omicron-BA.2 | 70 | 44.7 | 18.2 | 0.0 | 35.7 |