Occult Renal Calcifications in Patients with Normocalcemic Primary Hyperparathyroidism and Their Association with the Parathyroid Hormone-Vitamin D Axis

Table 3

Predictors of occult renal calcifications in NPHPT patients.

Variable	AUC	value	95% CI	Cutoff value	Sensitivity %	Specificity %
PTH (pg/mL)	0.850	0.003	0.714–0.986	101.30	100.0	72.0
Urinary calcium excretion (mg/24 h)	0.731	0.042	0.554–0.909	137.00	77.8	72.0
1.25(OH)2D (pg/mL)	0.894	0.009	0.737–1.000	69.50	100.0	81.2

AUC, area under the curve; CI, confidence interval; PTH, parathyroid hormone; 1.25(OH)₂D, 1.25-dihydroxyvitamin D.