In this study, Doppler ultrasonography was used to identify differences between the left and right kidneys. DU findings were retrospectively analyzed on 50 healthy individuals contemplating renal transplantation. DU and multidetector computed tomographic angiography were conducted prior to donor nephrectomy. A variety of DU indices were obtained, including PSV, RI, PI and EDV. Donors ranged in age from 22 to 38 years. The median DU indices of the right kidney were significantly different from those of the left kidney, but not for pulsatility index. Overall this investigation indicates that the left and right kidneys are not significantly different in terms of DU indices, except for P value