Increased Serum Levels of a Parathyroid Hormone-like Protein in Malignancy-Associated Hypercalcemia

Study Objective: To measure the serum levels of a newly described parathyroid hormone-like protein (PLP), which was isolated from malignant tumors associated with hypercalcemia, and determine whether PLP is a humoral factor in malignancy-associated hypercalcemia. Design: A cross-sectional study of serum levels of PLP using a newly developed radioimmunoassay. Setting: A university-affiliated Veterans Administration hospital in San Francisco,...