Conversely, the concentrations of phosphorus was significantly higher in the ESRD group than in the other two groups [phosphorus: 5.44 ± 1.81, 3.81 ± 0.51, and 4.22 ± 0.72 mg/dL (p < 0.05); intact parathyroid hormone: 345.88 ± 291.67, 53.75 ± 25.82, and 157.43 ± 162.71 pg/ml (p < 0.05) in the ESRD, control, and CKD groups, respectively]. Here, PTH is linked to chronic kidney disease.