Table II.

Concentration of inflammatory markers according to COPD severity

Stage of COPD	IL-6 [ng/ml]	IL-8 [ng/ml]	TNF-α [ng/ml]	Fibrinogen [mg/ml]
I (n = 11)	2.38	9.32	0.52	551
II (n = 1)	0	6.51	0	678
III (n = 2)	4.72	5.35	2.21	557