Background: There is no dedicated equation to estimate glomerular filtration rate (GFR) in postoperative renal transplant patients at present.The aim of this study was to evaluate the performance of 5 creatine(Scr)-based equations and 4 cystatin C (Cys C)-based equations in Chinese living related donor transplantation recipients.Methods: We compared the performance of 5 Scr and 4 Cys C estimated GFR equations using GFR measurement of 99m Tc-DTPA as the reference test in 39 stable renal transplantation populations.Bias, precision, accuracy within 30％ and 50％ ranges from the reference method and agreements of each test were compared.Factors affecting the performance were also evaluated.