Food influence, including raw meat with radionuclides (6.66 x 10(3) - 20.72 x 10(3) Bq/kg) during 30 days, on some homeostasis values was studied in white not pedigree rats. Erythrocyte number decrease, leukocyte total number increase by twice, young cell-metamyelocyte appearance, the decrease of total protein quantity and of blood serum gamma-globulin fraction level, liver enzyme activity decrease, and liver function disturbance have been ascertained. The obtained data can be the grounds for the future studies in the field of prognostic criterion development for the evaluation of ionizing irradiation small dose effect on the organism.