Hypoalbuminaemia caused by the leakage of serum albumin due to vasculitis is also postulated to be associated with AKI.20 Although hypoalbuminaemia was not a predictor of acute renal injury in previous studies,17, 25 the serum albumin level was significantly lower in our patients with AKI, and serves as an important predictor of AKI. This evidence concerns the gene ALB and acute kidney injury.