Dynamics of laboratory results from participants of the liquidation of the Chernobyl nuclear power plant The goal of this research is to find out the dynamic of the blood analyze in vari- ous situations and in the most common diseases in these who suffered from the atomic explosion in Chernobyl during the last 20 years. The results were compared to those obtained health patients. There was observed a small percent of the devia- tion of leucopenia and lymphocytose that cannot be considered as the result only of ionizing radiation. The other factors can be as fallowing: high incidence of hepa- titis, alcohol, smoking etc. These results demonstrate the importance of the con- tinuous monitoring of injured persons.