The ideal crystalloid solution to be used during the perioperative period in patients undergoing kidney transplantation remains unclear. Normal saline (NS), the intravenous fluid commonly using during the perioperative period, contains a high chloride content, which may be associated with hyperchloremic metabolic acidosis and acute kidney injury. Balanced crystalloid (BC) solutions have a lower chloride content. The purpose of the study was to determine if a BC solution prevents the incidence of hyperchloremia and hyperkalemia during renal transplantation.NS and BC given during kidney transplantation are compared. The primary outcome was hyperchloremia and hyperkalemia within 24 hours after surgery. Secondary outcomes were levels of serum creatinine at preoperative and within 5 days after transplantation, the incidence of acute rejection episodes, graft failure, length of stay at hospital, and mortality.A total of 60 patients were included in the study (30 in the BC group and 30 in the NS group). The mean postoperative chloride was 103.0 mmol/L (95% CI, 101-105) in the NS group and 100 mmol/L (95% CI, 98-102) in the BC group (P  .05).Our results suggest that a moderate volume (approximately 1500.0 mL) of NS infusion causes hyperchloremia rather than adverse clinical outcomes. A moderate amount of NS infusion can be used safely during uncomplicated living-donor kidney transplantations.