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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Calcium Clear all
Terminated Phase 4 Interventional Results available

Calcium Sulfate Spacer in Open Tibia Fractures

NCT03042546
View directory record Official record
Conditions
Open tíbia Fracture With Sub-segmental Bone Loss
Interventions
Calcium Sulfate, PMMA, No treatment
Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
16 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 9, 2023 · Synced Sep 3, 2026, 2:01 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Calcium Absorption in Postmenopausal Thai Women

NCT02291315
View directory record Official record
Conditions
Fractional Calcium Absorption
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
53 Years to 65 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2014 · Synced Sep 3, 2026, 2:01 PM EDT
Recruiting Phase 4 Interventional

CaOx Stone Prevention

NCT07225764
View directory record Official record
Conditions
Kidney Stones
Interventions
Chlorthalidone, Low oxalate diet
Drug · Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 3, 2026, 2:01 PM EDT
Recruiting Phase 2 Interventional

Rifampin in CYP24A1-related Hypercalcemia and Hypercalciuria

NCT03301038
View directory record Official record
Conditions
Idiopathic Infantile Hypercalcaemia - Severe Form, Genetic Disease, Hypercalcemia, Idiopathic, of Infancy, Hypercalciuric Hypercalcemia, Idiopathic Infantile Hypercalcemia - Mild Form, Hypercalciuria
Interventions
Rifampin
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Months to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2030
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalency Study of Calcitriol Tablets Under Fasting Conditions

NCT00601328
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Hypocalcemia
Interventions
Calcitriol
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 2 Interventional Results available

Topical Sodium Thiosulfate and Fractional Carbon Dioxide Laser in Treating Dermatomyositis Associated Calcinosis

NCT01572844
View directory record Official record
Conditions
Calcinosis
Interventions
Fractionated Carbon Dioxide (FCO2) Laser, Sodium thiosulfate
Device · Drug
Lead sponsor
Alison Ehrlich
Other
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 28, 2017 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Treatment of Vitamin D Insufficiency

NCT00933244
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
High Dose Vitamin D3, Low Dose Vitamin D3, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Up to 75 Years · Female only
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 9, 2015 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 2 Interventional Results available

Burosumab for Fibroblast Growth Factor-23 Mediated Hypophosphatemia in Fibrous Dysplasia

NCT05509595
View directory record Official record
Conditions
Fibrous Dysplasia Of Bone
Interventions
Burosumab
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
1 Year to 99 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 3, 2026, 2:01 PM EDT
Recruiting Phase 1Phase 2 Interventional

Parathyroid Allotransplant for Treatment of Hypoparathyroidism

NCT06961071
View directory record Official record
Conditions
Hypoparathyroidism, Hypoparathyroidism Postprocedural, Hypoparathyroidism Post-surgical
Interventions
Parathyroid Allotransplant
Biological
Lead sponsor
Peter Stock
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating the Effects of Ataciguat (HMR1766) on Aortic Valve Calcification

NCT02481258
View directory record Official record
Conditions
Aortic Valve Stenosis
Interventions
Ataciguat (HMR1766), Placebo Comparator: Matching Placebo
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
50 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Sep 3, 2026, 2:01 PM EDT
Terminated No phase listed Observational

Neurogenic Dysphonia/Dysphagia Registry

NCT02493491
View directory record Official record
Conditions
Neurogenic Dysphonia, Neurogenic Dysphagia
Interventions
Not listed
Lead sponsor
Merz North America, Inc.
Industry
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
12
States / cities
La Jolla, California • Sacramento, California • Augusta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2016 · Synced Sep 3, 2026, 2:01 PM EDT
Terminated No phase listed Observational

Observational Follow-up to ST-001 Calciphylaxis Pain Treatment With Intravenous Sodium Thiosulfate

NCT03319914
View directory record Official record
Conditions
Calciphylaxis
Interventions
Not listed
Lead sponsor
Hope Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
3
States / cities
Boston, Massachusetts • Albany, New York • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 1 Interventional

Effect of Cinacalcet on Parathyroid Hormone Secretion in Children and Adolescents With Hypophosphatemic Rickets

NCT00195936
View directory record Official record
Conditions
Hypophosphatemic Rickets, X-Linked Dominant
Interventions
Cinacalcet
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
5 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 18, 2021 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Over-the-Counter Medication Usage

NCT00439348
View directory record Official record
Conditions
Drugs, Non-Prescription, Medication Systems
Interventions
Verbal advice, Prescription
Behavioral
Lead sponsor
AdventHealth
Other
Eligibility
19 Years to 50 Years · Female only
Enrollment
246 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Nov 22, 2009 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Method Comparison Study for Measuring Potassium (K) and Ionized Calcium (iCa) in Blood

NCT06295835
View directory record Official record
Conditions
Potassium (K) & Ionized Calcium (iCa) in Capillary Whole Blood
Interventions
Fingerstick blood draw
Diagnostic Test
Lead sponsor
Abbott Point of Care
Industry
Eligibility
18 Years and older
Enrollment
232 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
3
States / cities
Baltimore, Maryland • Hershey, Pennsylvania • Redmond, Washington
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced Sep 3, 2026, 2:01 PM EDT
Completed No phase listed Observational

Citrate Effects and Bone Density in Long-Term Apheresis Donors

NCT00073060
View directory record Official record
Conditions
Healthy Apheresis Donors
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 80 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 3, 2023 · Synced Sep 3, 2026, 2:01 PM EDT
Withdrawn Phase 4 Interventional

Evaluating the Effect of Aliskiren Versus HCTZ on Coronary Flow Reserve in Hypertensive Type II Diabetics

NCT00994253
View directory record Official record
Conditions
Hypertension, Diabetes Type 2
Interventions
Aliskiren, Hydrochlorothiazide
Drug
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 1, 2017 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional

Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2

NCT01363167
View directory record Official record
Conditions
Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
Interventions
400 IU Cholecalciferol- Vitamin D Daily
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
1 Day to 3 Days
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 23, 2014 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study the Effects of Vitamin D and Calcium Supplementation at Tolerable Upper Limit Doses on Calcium Metabolism.

NCT02019381
View directory record Official record
Conditions
Delusion of Reference
Interventions
Endocrine Society UL Dosage Vitamin D, Institute of Medicine Dosage Vitamin D, Calcium
Dietary Supplement
Lead sponsor
Winthrop University Hospital
Other
Eligibility
50 Years to 90 Years · Female only
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Dec 21, 2016 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 2 Interventional Results available

Effect of Calcipotriol Plus Hydrocortisone Ointment on the Adrenal Hormone Balance and Calcium Metabolism in Patients With Psoriasis Vulgaris on the Face and Skin Folds

NCT00704262
View directory record Official record
Conditions
Psoriasis Vulgaris
Interventions
Calcipotriol plus hydrocortisone (LEO 80190)
Drug
Lead sponsor
LEO Pharma
Industry
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Ormond Beach, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Impact on Calcium Levels When Hemodialysis Patients With Secondary Hyperparathyroidism (SHPT) Switch From Cinacalcet to Etelcalcetide

NCT01932970
View directory record Official record
Conditions
Hyperparathyroidism, Secondary
Interventions
Etelcalcetide
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 100 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
40
States / cities
Alhambra, California • Azusa, California • Bakersfield, California + 37 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Vitamin D and Calcium on Genes in the Colon

NCT00298545
View directory record Official record
Conditions
Colorectal Polyps, Colorectal Adenoma, Adenocarcinoma
Interventions
placebo and Calcitriol, Calcium and Calcitriol
Drug
Lead sponsor
Rockefeller University
Other
Eligibility
48 Years to 72 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 17, 2011 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bone Health in Pregnancy

NCT01145573
View directory record Official record
Conditions
Pregnancy
Interventions
Calcium or Placebo
Dietary Supplement
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2020 · Synced Sep 3, 2026, 2:01 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Etelcalcetide (AMG 416) in the Treatment of Secondary Hyperparathyroidism (SHPT) in Patients With Chronic Kidney Disease on Hemodialysis

NCT01785849
View directory record Official record
Conditions
Hyperparathyroidism, Secondary
Interventions
Etelcalcetide, Placebo
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 100 Years
Enrollment
508 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
51
States / cities
Birmingham, Alabama • Pine Bluff, Arkansas • Azusa, California + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Sep 3, 2026, 2:01 PM EDT