Hypercalcemia and Bone Metastasis in a Case of Large Cell Neuroendocrine Carcinoma With Unknown Primary

Table 2

Hypercalcemia laboratory findings.

Intact parathyroid hormone (intact PTH)	11 pg/mL (reference range 15–65 pg/mL)
Parathyroid hormone-related peptide (PTHrP)	< 2.0 pmol/L (reference  pmol/L)
25-Hydroxy vitamin D	19 pg/mL (reference range 19.9–79.3 pg/mL)
1,25-Hydroxy vitamin D	20 ng/mL (reference range 30–80 ng/mL)