Table 2.
Salivary and blood biomarkers in COVID-19 patients and healthy controls (CTRL). In column 2, we report reference values when available in literature.
| CTRL | Patients | |||||||
|---|---|---|---|---|---|---|---|---|
| Analyte | Sample/ Reference Value |
n | Median | IQR | n | Median | IQR | p-Value |
| k (mg/L) | Saliva | 21 | 0.58 | 0.56 | 29 | 2.12 | 3.03 | 1.80 × 10−04 |
| λ (mg/L) | Saliva | 21 | 0.65 | 0.09 | 29 | 0.70 | 1.77 | 1.40 × 10−08 |
| k/λ | Saliva | 21 | 0.91 | 0.75 | 29 | 1.35 | 2.15 | 1.30 × 10−02 |
| K + λ (mg/L) | Saliva | 21 | 1.22 | 0.59 | 29 | 3.43 | 5.00 | 6.60 × 10−05 |
| IgA1 (mg/L) | Saliva | 21 | 36.30 | 9.70 | 29 | 133.10 | 237.10 | 1.30 × 10−05 |
| IgA2 (mg/L) | Saliva | 21 | 29.70 | 33.60 | 29 | 118.80 | 227.20 | 2.00 × 10−05 |
| Ferritin (ng/mL) | Serum/ 30–300 ng/mL |
− | − | − | 27 | 432.00 | 286.00 | − |
| IL-6 (ng/L) | Serum/ <7 ng/L |
− | − | − | 22 | 11.45 | 10.22 | − |
| CRP (mg/L) | Serum/ 3–10 mg/L |
− | − | − | 25 | 28.60 | 42.50 | − |
| D-Dimer (ng/mL) | Serum/ <250 ng/mL |
− | − | − | 28 | 437.50 | 393.75 | − |