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. 2022 Apr 23;126:29–36. doi: 10.1016/j.jhin.2022.04.007

Table II.

Laboratory markers in intensive care unit (ICU) patients with coronavirus disease 2019 (COVID-19) (January–December 2021)


COVID-19-positive ICU patients
Tocilizumab No tocilizumab
N 41 33
CRP (mg/L)
 Median 96 130
 Range 2–283 6–319
Ferritin (ng/mL)
 Median 843 830
 Range 14–4745a 54–2856b
D-dimer (μg/mL)
 Median 1.76 2.45
 Range 0.4–4.0 0.36–4.0c
IL-6 (ng/L)
 Median 36 67
 Range 3–3770 8–50,000
White cell count (x 109/L)
 Median 9.66 9.25
 Range 2.57–327 2.77–33.04
Lymphocytes (x 109/L)
 Median 0.53 0.68
 Range 0.21–284 0.32–5.9
Procalcitonin (μg/L)
 Median 0.26 0.25
 Range 0.06–1.88d 0.06–100e

CRP, C-reactive protein; IL-6, interleukin-6.

a

Data from 35/41 patients.

b

Data from 31/33 patients.

c

Data from 32/33 patients.

d

Data from 37/41 patients.

e

Data from 30/33 patients.