IL6 and Sepsis: Serum IL-6 levels could discriminate sepsis (AUC, 0.97-1.00, p<0.001; cut-off value, 5.89 pg/mL [sensitivity 97.0%, specificity 97.2%]) from controls and could discriminate septic shock (AUC, 0.85-0.95; cut-off value, 53.59 pg/mL [sensitivity 91.8%, specificity 63.2%]) from the others (controls and sepsis) (Table 2 and Figure 2).