Confocal micro-Raman and FT-IR spectroscopies have been used for detection of radiation influence of hemoglobin of patients examined by radio-isotopes diagnosis (Tc<sup>99m</sup>). After irradiation we observed some little changes of the Raman scattering bands which connected with out of plane porphyrine bending vibrations, also we observed additional band due to methemoglobin. Radiation of blood lead to the transition from hemoglobin (Fe<sup>2+</sup>) to
methemoglobin (Fe<sup>3+</sup>) with a delocalization of iron from porphyrine plane. It was shown that FT-IR spectra indicate the
radiation effects on hemoglobin.