8 studies were found.

1.		Recruiting	Studies with Vitamin D Conditions: Hypocalcemia; Rickets
2.		Recruiting	Resistance to Vitamin D or Parathyroid Hormone Conditions: Hypocalcemia; Osteomalacia; Pseudohypoparathyroidism; Pseudopseudohypoparathyroidism; Rickets
3.		Recruiting	Studies of Elevated Parathyroid Activity Conditions: Hyperparathyroidism; Hypocalcemia; Hypoparathyroidism; Parathyroid Neoplasm
4.		Recruiting	Studies of Inherited Diseases of Metabolism Conditions: Hypercalcemia; Hyperparathyroidism; Multiple Endocrine Neoplasia
5.		Recruiting	Study to Evaluate the Effects of Zemplar Injection and Calcijex on Intestinal Absorption of Calcium Conditions: Hypoparathyroidism; Hypercalcemia; Chronic Kidney Disease
6.		Recruiting	A Study to Examine the Use of Zemplar to Increase Serum Calcium Levels in ICU Subjects Condition: Hypocalcemia
7.		Recruiting	Zoledronate in Preventing Bone Loss Caused By Long-Term Androgen Deprivation Therapy in Patients With Stage III or Stage IV Prostate Cancer Conditions: Hypercalcemia; stage III prostate cancer; stage IV prostate cancer
8.		Not yet recruiting	Oral Tolvaptan in Patients with Hyponatremia Condition: Hyponatremia