PTH and chronic kidney disease: The CKD model was well established with higher SCr (49.39 ± 11.32 vs. 187.08 ± 47.60 μmol/L, P < 0.001), BUN (2.74 ± 0.64 vs. 9.76 ± 3.36 mmol/L, P < 0.01), and PTH (475.16 ± 348.25 vs. 4403.79 ± 275.24 pg/l, P < 0.001) levels compared to the control group.