Correlation between urinary excretion of hL-FABP and other clinical parameters. Urinary excretion of hL-FABP was correlated significantly with urinary protein (r = 0.68, P < 0.0001), urinary NAG (r = 0.67, P < 0.0001), and creatinine clearance (Ccr) (r = 0.49, P < 0.0001). By contrast, total cholesterol was not correlated with urinary excretion of hL-FABP (r = 0.27, P < 0.0001).