Table 3 Sensitivity of antigenemia and in upper and lower respiratory-tract specimens at different time point.
From: SARS-CoV-2 antigenemia and RNAemia in association with disease severity in patients with COVID-19
Symptom onset | COVID-19 Antigenemia | Upper respiratory track E gene(Kogene kit) | Lower respiratory track E gene (Kogene kit) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Positive | Negative | Total | Sensitivity | Positive | Negative | Total | Sensitivity | Positive | Negative | Total | Sensitivity | |
− 3 to 0 | 17 | 6 | 23 | 73.9 | 9 | 2 | 11 | 81.8 | 9 | 0 | 9 | 100.0 |
1 to 3 | 29 | 4 | 33 | 87.9 | 14 | 1 | 15 | 93.3 | 8 | 2 | 10 | 80.0 |
4 to 6 | 18 | 9 | 27 | 66.7 | 17 | 4 | 21 | 80.9 | 9 | 5 | 14 | 64.3 |
7 to 9 | 35 | 13 | 48 | 72.9 | 11 | 6 | 17 | 64.7 | 13 | 1 | 14 | 92.9 |
10 to 12 | 21 | 9 | 30 | 70.0 | 14 | 2 | 16 | 87.5 | 6 | 7 | 13 | 46.2 |
13 to 15 | 28 | 13 | 41 | 68.3 | 10 | 3 | 13 | 76.9 | 8 | 4 | 12 | 66.7 |
16 to | 20 | 37 | 57 | 35.1 | 16 | 38 | 54 | 29.6 | 22 | 31 | 53 | 41.5 |
