Table 3.
Comparison of the day determining the first detection of IgM and IgG antibodies (exclusively positive results) by the different serological assays.
| IgM | IgG | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Donor | Wantai | Mikrogen | MP-Bio | MP-Bio Rapid | Euroimmun | Range Detection | Maximum Difference | Wantai | Mikrogen | MP-Bio | Euroimmun | Range Detection | Maximum Difference | |||||||||||
| Day | SC | Day | SC | Day | SC | Day | SC | Day | SC | Day | SC | Day | SC | Day | SC | Day | SC | |||||||
| 1 | 8 | 2 | 8 | 2 | 5 | 3 | 8 | 2 | 13 | 1 | 5–13 | 8 | 8 | 3 | 13 | 2 | 8 | 3 | 8 | 3 | 8–13 | 5 | ||
| 2 | 35 | 3 | 42 | 2 | 35 | 3 | 35 | 3 | 35 | 3 | 35–42 | 7 | 35 | 3 | 35 | 3 | 35 | 3 | 35 | 3 | 35 | - | ||
| 3 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | 3 | 8 | 2 | 0–8 | 8 | 0 | 3 | 8 | 2 | 0 | 3 | 0 | 3 | 0–8 | 8 | ||
| 4 | - | 0 | 42 | 3 | 48 | 2 | 42 | 3 | 42 | 3 | 42–48 | 6 | 21 | 3 | 42 | 2 | 42 | 2 | 42 | 2 | 21–42 | 21 | ||
| 5 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | - | 0 | 3 | 0 | 3 | 0 | 3 | 0 | 3 | 0 | - | ||
| 6 | 28 | 3 | 28 | 3 | 28 | 3 | 28 | 3 | 28 | 3 | 28 | 0 | 28 | 2 | 28 | 2 | 21 | 3 | 28 | 2 | 21–28 | 7 | ||
| 7 | 40 | 3 | 40 | 3 | 40 | 3 | 40 | 3 | 40 | 3 | 40 | 0 | 40 | 3 | 49 | 2 | 40 | 3 | 40 | 3 | 40–49 | 9 | ||
| 8 | 28 | 3 | 32 | 2 | 28 | 3 | 32 | 2 | - | 0 | 28–32 | 4 | 39 | 2 | 39 | 2 | 32 | 3 | 32 | 3 | 32–39 | 7 | ||
| 9 | - | 0 | - | 0 | - | 0 | 52 | 3 | - | 0 | 52 | - | 49 | 3 | 49 | 3 | - | 0 | 49 | 3 | 49 | 0 | ||
| 10 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | - | 59 | 3 | 59 | 3 | - | 0 | 59 | 3 | 59 | - | ||
| SC * | 20 | 21 | 23 | 25 | 18 | - | - | 28 | 24 | 23 | 28 | - | - | |||||||||||
* SC: score, the different IgM or IgG assays were ranked as follows: first positive detection: score 3; second positive detection: score 2; third positive detection: score 1; no positive detection: score 0.