A research of some oxidative-antioxidative system’s characteristics of donor blood, depending on the concentration of injected saline (physiologic saline, mafusolum) and colloidal (Polyoxidin, Polyoxifumarin) solutions of blood substitutes, was made in model experiments "in vitro"
The content of a malondialdehyde had been appraised as an indicator of lipid peroxidation. The antioxidative system's condition was estimated on the enzyme activity (superoxide dis-mutase (SOD) and catalase). Threshold correlation between blood/blood substitutes was found, which exceeding lead to an imbalance of the condition of the oxidative-antioxidative system. The comparison of the optimal correlation between blood/ blood substitutes (standard dosages used in clinic) received from the “in vitro” experiment was made.