Thirteen patients with gram-negative sepsis underwent the procedure of selective lipopolysaccharide adsorption using Alteco LPS Adsorber (group I) or Toraymyxin columns (group II). This therapy positively influenced the course of sepsis. After the second procedure, levels of serum endotoxin and procalcitonin markedly decreased in both groups. We also discovered a positive effect on leukocytosis levels and a trend towards normalization of body temperature, improvement of hemodynamic indices and increase of the lung's oxygenating function. Blood cultures taken several days after the procedure were negative.