Аннотация:The effect of adding of pro- and antioxidant agents to value of redox potentials (RP) of blood serum for volunteers group was studied. Monitoring of blood serum RP for patients with acute cerebral pathology was executed. It was obtained that effect of treatment of above patients by hyperbaric oxygenation method to value of RP occurs. Correlation between measured RP value and level of toxicity for biological medium measured by "average molecule'' test was found.