Table 2 Laboratory parameters* in COVID-19 patients enrolled in the study (N = 32).

From: Retinal vessels modifications in acute and post-COVID-19

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

  1. 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.
  2. *The closest available within 3 days prior to the fundus examination at baseline and the same day of fundus photos at follow-up.
  3. **T test (paired).
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