FABP4 and acute kidney injury: Patients with acute kidney injury related first hospitalization events had a higher prevalence of hypertension (p = 0.042), steroid used (p = 0.038) as well as higher serum BUN (p < 0.001), creatinine (p = 0.008) and A-FABP (p = 0.004) levels, and lower eGFR (p = 0.004) than those without the events.