Objective The aim of the present study was to assess the influence of anemia on devel-opment of contrast-induced acute kidney injury ( AKI) after percutaneous coronary intervention.Methods The subject group consisted of 1026 patients who had undergone coronary intervention procedure between January 1,2008 and October 31,2009. A nonionic,low osmolality contrast agent was used in our la-boratory at this time. Serum creatinine values were measured before and within 48 h of administration of con-trast agents. Contrast-induced nephropathy was defined as an increase of 0. 5 mg/dl or 25% in serum creati-nine concentration over baseline within 48 h of angiography, anemia as hemoglobin ( Hb) < 120 g/L in women and < 130 g/L in men. Results Among the 1026 patients studied,32(3. 1% ) experienced AKI af-ter procedure. AKI occurred in 6. 3% of the anemic patients and 2.2% of the non-anemic patients (P