Table 5.
Laboratory results of COVID-19 patients.
| All (n = 267) | Re-positive classification | P value | ||
|---|---|---|---|---|
| No (n = 237) | Yes (n = 30) | |||
| White blood cell count, × 109/L | ||||
| D1 | 4.9 (3.8–6.4) | 4.9 (3.8–6.4) | 4.8 (4.2–7.3) | 0.461 |
| D3 | 5.8 (4.3–7.6) | 5.8 (4.3–7.5) | 5.6 (4.2–8.9) | 0.851 |
| D7 | 6.0 (4.4–8.1) | 6.0 (4.5–8.0) | 6.3 (4.2–8.9) | 0.834 |
| D14 | 6.1 (4.6–8.0) | 6.3 (4.7–8.0) | 5.3 (4.4–8.0) | 0.341 |
| Lymphocyte count, × 109/L | ||||
| D1 | 1 (0.7–1.4) | 1 (0.7–1.4) | 1 (0.8–1.3) | 0.974 |
| D3 | 1 (0.7–1.3) | 1 (0.7–1.3) | 0.9 (0.7–1.2) | 0.438 |
| D7 | 1.2 (0.8–1.6) | 1.2 (0.8–1.6) | 1.1 (0.8–1.5) | 0.479 |
| D14 | 1.3 (1.0–1.7) | 1.3 (1.0–1.7) | 1 (0.9–1.5) | 0.024 |
| Neutrophil count, × 109/L | ||||
| D1 | 3.2 (2.3–4.7) | 3.2 (2.3–4.6) | 3.7 (2.5–5.4) | 0.209 |
| D3 | 4 (2.8–5.7) | 4 (2.8–5.6) | 3.9 (2.7–7.1) | 0.857 |
| D7 | 4 (2.7–6.2) | 4 (2.8–6.1) | 3.9 (2.5–6.5) | 0.975 |
| D14 | 4 (2.9–5.8) | 4.1 (3.1–5.9) | 3.8 (2.6–5.6) | 0.571 |
| Platelet, × 109/L | ||||
| D1 | 189 (142–243) | 186 (140–239) | 216 (176–260) | 0.02 |
| D3 | 212 (166–282) | 214 (166–284) | 191 (157–260) | 0.556 |
| D7 | 220 (179–282) | 217 (179–280) | 228 (156–290) | 0.919 |
| D14 | 229 (176–291) | 230 (176–292) | 216 (176–274) | 0.746 |
| Hemoglobin | ||||
| D1 | 126 (116–138) | 126 (116–138) | 127 (118–136) | 0.717 |
| D3 | 123 (113–134) | 123 (114–134) | 125 (109–136) | 0.969 |
| D7 | 118 (106–130) | 118 (105–129) | 120 (110–133) | 0.327 |
| D14 | 110 (96–123) | 109 (95–123) | 114 (102–126) | 0.343 |
| C-reactive protein, mg/dL | ||||
| D1 | 1.4 (0.3–4.3) | 1.3 (0.3–4.3) | 1.7 (0.5–4.2) | 0.806 |
| D3 | 1.1 (0.3–3.2) | 1.1 (0.3–3.0) | 1.1 (0.3–4.3) | 0.69 |
| D7 | 0.4 (0.1–2.0) | 0.4 (0.1–1.8) | 0.4 (0.2–3.0) | 0.443 |
| D14 | 0.2 (0.1–0.8) | 0.2 (0.1–0.7) | 0.5 (0.1–3.0) | 0.109 |
| PCT | ||||
| D1 | 0.05 (0.04–0.08) | 0.05 (0.04–0.08) | 0.05 (0.04–0.09) | 0.456 |
| D3 | 0.06 (0.04–0.11) | 0.06 (0.04–0.10) | 0.05 (0.04–0.15) | 0.76 |
| D7 | 0.06 (0.04–0.08) | 0.05 (0.04–0.07) | 0.07 (0.05–0.09) | 0.044 |
| D14 | 0.05 (0.04–0.07) | 0.05 (0.04–0.07) | 0.06 (0.05–0.10) | 0.019 |
| Blood urea nitrogen, mmol/L | ||||
| D1 | 4.2 (3.3–5.2) | 4.1 (3.3–5.1) | 4.3 (3.3–6.9) | 0.457 |
| D3 | 4.7 (3.8–6.0) | 4.7 (3.7–6.0) | 4.8 (4.2–6.7) | 0.335 |
| D7 | 4.6 (3.6–5.9) | 4.6 (3.6–5.9) | 4.7 (3.7–6.4) | 0.689 |
| D14 | 4.3 (3.6–5.4) | 4.3 (3.7–5.4) | 4.5 (3.6–5.8) | 0.572 |
| Creatinine, μmol/L | ||||
| D1 | 65 (52–78) | 65 (52–78) | 66 (51–85) | 0.803 |
| D3 | 63 (50–76) | 62 (49–73) | 69 (52–82) | 0.119 |
| D7 | 64 (51–78) | 62 (50–77) | 75 (58–82) | 0.076 |
| D14 | 64 (49–76) | 61 (49–75) | 76 (53–84) | 0.097 |
| Alanine aminotransferase, U/L | ||||
| D1 | 19 (13–32) | 19 (13–32) | 18 (12–29) | 0.315 |
| D3 | 25 (15–46) | 24 (16–47) | 28 (14–45) | 0.979 |
| D7 | 24 (15–45) | 23 (15–44) | 37 (16–70) | 0.115 |
| D14 | 27 (15–50) | 28 (14–48) | 26 (17–64) | 0.784 |
| D1 | 2.8 (2.4–3.3) | 2.8 (2.4–3.3) | 2.9 (2.5–3.4) | 0.317 |
| D3 | 2.9 (2.4–3.4) | 2.9 (2.4–3.4) | 2.9 (2.5–3.5) | 0.529 |
| D7 | 2.5 (2.2–2.9) | 2.5 (2.2–2.9) | 2.6 (2.3–3.3) | 0.279 |
| D14 | 2.5 (2.2–2.9) | 2.4 (2.2–2.8) | 3.0 (2.3–3.4) | 0.014 |
| D-dimer, μg/L | ||||
| D1 | 0.59 (0.29–1.51) | 0.59 (0.29–1.45) | 0.58 (0.28–1.75) | 0.74 |
| D3 | 1.33 (0.63–4.23) | 1.33 (0.65–4.18) | 1.31 (0.56–3.80) | 0.956 |
| D7 | 1.02 (0.47–2.60) | 1.01 (0.44–2.74) | 1.03 (0.64–2.33) | 0.84 |
| D14 | 0.97 (0.41–1.92) | 0.97 (0.40–1.90) | 0.98 (0.53–2.65) | 0.698 |
| Lactate dehydrogenase, U/L | ||||
| D1 | 188 (152–235) | 187 (151–236) | 193 (157–231) | 0.894 |
| D3 | 204 (156–260) | 203 (156–259) | 212 (188–265) | 0.601 |
| D7 | 181 (151–233) | 178 (150–223) | 215 (152–263) | 0.262 |
| D14 | 172 (141–203) | 168 (141–202) | 186 (159–204) | 0.304 |
| Creatine kinase, U/L | ||||
| D1 | 77 (47–128) | 77 (47–135) | 76 (45–102) | 0.595 |
| D3 | 44 (30–70) | 44 (30–67) | 40 (27–152) | 0.78 |
| D7 | 36 (24–58) | 36 (24–58) | 32 (19–51) | 0.759 |
| D14 | 38 (26–57) | 37 (25–51) | 54 (31–64) | 0.073 |
| Creatine kinase–MB, U/L | ||||
| D1 | 7 (6–11) | 7 (6–12) | 7 (5–11) | 0.588 |
| D3 | 8 (6–12) | 8 (6–12) | 8 (7–11) | 0.767 |
| D7 | 7 (5–10) | 7 (5–10) | 8 (5–12) | 0.855 |
| D14 | 6 (4–8) | 6 (4–8) | 6 (5–9) | 0.24 |
| PaO2:FiO2, mmHg | 343 (263–500) | 350 (273–502) | 316 (252–455) | 0.23 |
| Lactate, mmol/L | 1.2 (0.8–1.9) | 1.2 (0.8–1.9) | 1.3 (1.0–1.9) | 0.466 |