Soluble α-Klotho Serum Levels in Chronic Kidney Disease

Figure 3

s-Klotho (soluble Klotho) (a) and FGF23 (fibroblast growth factor 23) and (b) serum levels stratified by CKD stage and compared with reference values. Indicated are medians, first and third quartiles, minimal and maximal values. Values between 1.5 and 3 times IQR above the third quartile or below the first are represented by circles. Wilcoxon rank-sum tests. KDOQI: National Kidney Foundation Disease Outcomes Quality Initiative clinical practice guidelines [15]. versus reference value; versus reference value; versus reference value.

(a)

(b)