LCN2 and chronic kidney disease: Using Fisher’s exact test, it was determined that “normal GFR” obese adolescents, who initially had elevated serum uric acid concentration (p < 0.0001), serum triglycerides concentration (p = 0.0006), serum cholesterol concentration (p < 0.0001), and urine NGAL concentration (p = 0.0003), developed CKD over a follow-up period of 6 to 30 months.