Which of the following is not associated with hypercalcemia?

This is a question repeated often. Tumor lysis syndrome causes hypocalcemia. A normal serum calcium level is 8-10 mg/dL (2-2.5 mmol/L) with some interlaboratory variation in the reference range, and hypercalcemia is defined as a serum calcium level greater than 10.5 mg/dL (>2.5 mmol/L).