Table 4. Cytokines and CRP in ICU patients with high and normal PCT.

Analyte	PCT ≥ 0.5 μg/L	PCT < 0.5 μg/L	P value
	(n = 26)	(n = 20)
IL-1β (ng/L)	0.45 (0.32–1.03)	0.32 (0.33–0.40)	0.12
IL-6 (ng/L)	44.95 (25.85–119.75)	25.30 (14.97–130.50)	0.41
IL-8 (ng/L)	72.20 (51.05–116.57)	69.00 (47.70–112.50)	0.92
TNFα(ng/L)	33.55 (24.92–38.92)	20.25 (13.97–23.35)	<0.01
CRP (mg/L)	108.6 (60.0–223.7)	81.8 (54.9–106.5)	0.11

Data is presented as median (IQR).

Abbreviations: PCT, procalcitonin; IL-1β, interleukin-1β; IL-6, interleukin-6; IL-8, interleukin-8; TNFα, tumour necrosis factor alpha; CRP, C-reactive protein