PTH and hypercalcemia disease: When multivariate analysis was performed using serum levels of hemoglobin, phosphorus, β‐CTX, tPINP, OC, 25‐(OH)2D3, PTH, creatinine, and uric acid, laboratory parameters (PTH, creatinine, uric acid, and hemoglobin) were found to be the most important factors of hypercalcemia (Table 4).