Patients with higher FGF23 levels tended to be younger; have longer dialysis vintage, lower prevalence of diabetes, and higher levels of serum creatinine, calcium, phosphorus, and intact PTH levels; and be more often prescribed calcium-based and non–calcium-based phosphate binders and PTH-lowering medications such as active vitamin D and cinacalcet. Here, FGF23 is linked to diabetes mellitus.