Plasma concentrations of presepsin, CRP and PCT in the group of severe sepsis and septic shock at T0 Group Index Severe sepsis (n = 38) Septic shock (n = 42) p Median (Quartile) Median (Quartile) Presepsin (pg / ml) 313, 7 (177, 1 - 494, 2) 512, 6 (288, 6 - 1986, 0) < 0, 01 PCT (ng / ml) 4, 0 (1, 6 - 15, 5) 15, 3 (3, 9 - 62, 5) < 0, 05 CRP (mg / L) 110, 6 (51, 1 - 180, 2) 162, 0 (60 - 212, 5) > 0, 05 Plasma concentrations of presepsin and PCT in septic shock groups were significantly higher than those in severe infections.