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. 2021 Sep 29;11:19373. doi: 10.1038/s41598-021-98873-1

Table 2.

Laboratory parameters* in COVID-19 patients enrolled in the study (N = 32).

Parameter (units) Baseline (acute COVID-19)
Mean (SD, range)
Follow-up (post COVID-19)
Mean (SD, range)
p**
HTC (%) 39.34 (5.52, 28 – 48) 42.4 (4.1, 33 – 49) 0.0003
WBC (× 106/L) 6372.8 (2232.9, 1910–13,340) 7498.7 (1800.1, 4350–10,780) 0.006
Neutrophils (× 106/L) 3723.1 (1798.7, 650–8730) 4331. 8 (1521.2, 1690–7130) 0.1
Lymphocytes (× 106/L) 1874.7 (659.9, 770–3450) 2454.4 (713.8, 1340–4490)  < 0.0001
Platelets (× 109/L) 312.3 (135.9, 113–673) 248 (54.4, 111–336) 0.01
PT (ratio) 1.2 (0.13, 0.97–1.61) 1.06 (0.1, 0.91–1.44)  < 0.0001
PTT (ratio) 1.16 (0.14, 0.9–1.47) 0.94 (0.1, 0.71–1.19)  < 0.0001
Fibrinogen (mg/dL) 536.5 (119.0, 320–701) 425.6 (108, 193–701) 0.003
D-Dimer (μg/L) 673.6 (501.5, 200–2279) 365.6 (177.8, 199–803) 0.003
CRP (mg/L) 21.8 (33.3, 1–142) 2.3 (1.5, 0.3–5) 0.002
Creatinine (mg/dL) 0.82 (0.18, 0.44–1.2) 0.84 (0.2, 0.39–1.26) 0.15

COVID-19 Coronavirus disease 2019, SD standard deviation, HTC hematocrit, WBC white blood cells, PT prothrombin time, PTT partial thromboplastin time, CRP C-reactive protein, LDH lactic acid dehydrogenase, CK creatine kinase.

*The closest available within 3 days prior to the fundus examination at baseline and the same day of fundus photos at follow-up.

**T test (paired).