However, normal PTH levels do not prevent low turnover disease.[6] In addition, low PTH levels may be linked to hypercalcemia.[7] Hypercalcemia may increase the mortality of ESRD patients with abnormal PTH levels at any given serum P level.[8] Therefore, risk stratification of patients based on the Ca or P levels as well as the PTH levels is crucial.[9]. This evidence concerns the gene PTH and hypercalcemia disease.