The laboratory activity was significantly higher in patients with TRAPS 33/40 (82.5%) than patients with other diagnoses 7/40 (17.5%): ESR 51.1 mm/h (IQR 36; 68) and 30 (IQR 24; 43) mm/h, p=0.02156; CRP 52 mg/l (IQR 40;60) and 10 (IQR 7,5;30,2), p= 0.001, accordingly. Here, CRP is linked to TNF receptor 1-associated periodic fever syndrome.