S100A9 and Sepsis: The median concentrations of S100A9 on admission were 364.43 pg/ml (203.40, 561.56) in patients with sepsis, 747.82 pg/ml (430.63, 1501.63) in patients with septic shock, 280.99 pg/ml (184.11, 457.12) in non-septic ICU patients, and 268.20 pg/ml (134.97, 358.10) in healthy controls.