Older Age Is Associated with Decreased Levels of VDR, CYP27B1, and CYP24A1 and Increased Levels of PTH in Human Parathyroid Glands

Table 1

Clinical features of 70 patients.

Demographic	Mean ± SD	Reference range
Age (year)	41 ± 14
Calcium (mmol/L)	2.31 ± 0.12	2.11–2.52
Phosphorus (mmol/L)	1.04 ± 0.16	0.85–1.51
Creatinine (μmol/L)	53.31 ± 5.80	44–133
PTH (pmol/L)	4.32 ± 1.36	1.60–6.90