FIG. 3.

Correlation of intact fibroblast growth factor (FGF) (a) and carboxy-terminal FGF (b) with creatinine and estimated glomerular filtration rate (eGFR). Plasma samples were obtained from the UCDMC Clinical Pathology laboratories that came in for evaluation of creatinine levels. Carboxy-terminal and intact FGF assays were performed according to manufacturers instructions. (c) Values for intact and carboxy-terminal FGF-23 as a function of eGFR: Divided into eGFR >60 and <60, respectively. (#) P < 0.05 and (*) P < 0.001 compared to eGFR <60. C-terminal, Carboxy-terminal.