Patients with renal impairment had higher urinary NGAL levels (357.78 ± 228.51 μg/g creatinine) compared to those of patients without renal impairment, either with or without ascites (96.84 ± 35.58, 113.76 ± 47.98 μg/g creatinine, resp). The gene discussed is LCN2; the disease is Ascites.