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Table 2 Sensitivity, Specificity and Youden index of serum calcium, PTH, Calcium×PTH and Pfindex in diagnosis of PHPT

From: New parathyroid function index for the differentiation of primary and secondary hyperparathyroidism: a case-control study

 

Sensitivity (%)

Specificity (%)

Youden index

PFindex> 34

96.9

97.6

0.945

Calcium> 2.51

95.3

97.6

0.929

PTH > 11.96

85.1

100

0.851

Calcium*PTH > 35.43

93.0

97.6

0.906

Ca/P > 2.71

91.4

93.9

0.853