Correlation of plasma presepsin with severity scales in patients with severe sepsis and septic shock The concentration of plasma presepsin at the time of diagnosis of severe sepsis and septic shock is positively correlated, the average level with SOFA scale (r = 0.39; p <0.001) and APACHE II scale (r = 0.33; p < 0.01), SAPS 2 scale (r = 0.22; p <0.05), MODS scale (r = 0.36; p <0.01).