Supplementary materials for Faseb J

1. Laboratory methods2. Supplementary Table 1. iPTH and FGF23 assays.3. Supplementary Table 2. Multivariate linear regression of variables associated with Cterminal FGF23 plasma concentrations in children with CKD.4. Supplementary Table 3. Multivariate linear regression of variables associated with Cterminal FGF23 plasma concentrations in adult kidney transplant recipients.5. Supplementary Table 4. Multivariate linear regression of variables associated with intact FGF23 plasma concentrations in adult kidney transplant recipients.6. Supplementary Table 5. Correlation of iPTH, oxPTH, n-oxPTH and biomarkers of oxidative stress in 344 haemodialysis patients.7. Supplementary Figure 1. noxPTH independent of Time on Column and intrinsicly different in healthy and CKD samples.8. Supplementary Figure 2. Effect of non-oxidized PTH (n-oxPTH) and different forms of oxidized PTH on G6PD, actin, IL6 and SOST expression in cultured UMR106 osteoblast-like cells. 9. Supplementary Figure 3. Amino acid sequence of FGF23, signal sequence (1-24) in bold, methionine (red) can be oxidized.