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Clinical performance of DBS vs. plasma for PCR-confirmed COVID-19 detection.
| Comparisons | Threshold (U/mL) | True Negatives |
True Positives |
False Negatives |
False Positives |
Sensitivity | Specificity |
|---|---|---|---|---|---|---|---|
| Plasma vs. PCR-confirmed COVID-19 | 0.8 | 11 | 46 | 6 | 0 | 0.88 (95% CI: 0.77, 0.96) | 1 (95% CI: 0.72, 1) |
| DBS vs. PCR-confirmed COVID-19 | 0.8 | 11 | 45 | 7 | 0 | 0.87 (95% CI: 0.74, 0.94) | 1 (95% CI: 0.72, 1) |
| DBS vs. plasma-positive COVID-19 | 0.8 | 17 | 45 | 1 | 0 | 0.98 (95% CI: 0.88, 1) | 1 (95% CI: 0.8, 1) |
