The renal scintigraphy method had clear benefits in the selecting kidney for transphant. Methods: 194 voluntary kidney donation patients at the Department of Hemodialysis were calculated glomerular filtration rate according to the Cockcroft-Gault formula, MDRD and radioiodine injection renal scintigraphy. Cross-sectional, retrospective descriptive method. Research content: Comparing the effectiveness of the evaluation of glomerular filtration rate according to the formulas compared with kidney scintigraphy on voluntary kidney donors. Results: About the glomerular filtration rate according to the estimated formulas and renal scintigraphy. According to the formula Cockcroft - Gault: 99,79 ± 14,72 ml/min/1,73m2. According to the MDRD formula: 87,34 ± 13,10 ml/ min/1,73m2. According to renal scintigraphy method: 128,68 ± 16,15 ml/min/1,73m2. Conclusions: There is a close correlation in glomerular filtration rate between the Cockcroft - Gault formula and MDRD formula, (r = 0,77), p < 0,001. The correlation between these two formulas and renal scintigraphy method is weaker.