uNGAL levels displayed as a function of eGFR in patients with CKD due to HIVAN, non-HIVAN FSGS, and diabetic and membranous Nephropathies. There was no correlation between the GFR and uNGAL in the HIVAN population (r = 0.082, P = 0.8) or the patients with diabetic nephropathy (r = −0.348, P = 0.4), but a significant correlation existed between GFR and uNGAL for both non-HIVAN FSGS (r = −0.753, P = 0.03) and membranous nephropathy (r = −0.665, P = 0.00). All data were log-transformed.