IGF1 and chronic kidney disease: Mean IGF-1 concentrations increased from 26.3 ± 2.8 nmol/L to 59.8 ± 20.5 nmol/L (P < 0.05) and from 27.3 ± 6.8 nmol/L to 63.6 ± 15.6 nmol/L (P < 0.05) in the CKD-group and healthy controls respectively.