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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hypocalcemia Clear all
Terminated Phase 2 Interventional Results available

Studies With 1,25-Dihydroxycholecalciferol

NCT00001151
View directory record Official record
Conditions
Hypocalcemia, Rickets
Interventions
1,25-Dihydroxycholecalciferol
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
Not listed
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1976 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 24, 2013 · Synced Jul 21, 2026, 10:34 AM 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 Jul 21, 2026, 10:34 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Magnesium Effects in Apheresis

NCT00040235
View directory record Official record
Conditions
Healthy
Interventions
magnesium
Procedure
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 2 Interventional

Phase II Pre-operative Vitamin D Supplementation to Prevent Post-thyroidectomy Hypocalcemia

NCT01868750
View directory record Official record
Conditions
Thyroid Nodules, Hypocalcemia
Interventions
Calcitriol, Control Pill
Dietary Supplement
Lead sponsor
David Shonka, MD
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 4 Interventional Results available

A Study to Learn if Recombinant Human Parathyroid Hormone [rhPTH(1-84)] Can Improve Symptoms and Metabolic Control in Adults With Hypoparathyroidism (BALANCE)

NCT03324880
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
rhPTH (1-84), Placebo
Biological
Lead sponsor
Shire
Industry
Eligibility
18 Years to 85 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
6
States / cities
Chicago, Illinois • Detroit, Michigan • Rochester, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2023 · Synced Jul 21, 2026, 10:34 AM 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 Jul 21, 2026, 10:34 AM EDT
Completed Not applicable Interventional Results available

Assessing Benefits of Near Infrared Autofluorescence (NIRAF) Detection for Identifying Parathyroid Glands During Total Thyroidectomy

NCT05022667
View directory record Official record
Conditions
Thyroid Neoplasms, Thyroid Diseases, Hypoparathyroidism, Endocrine System Diseases, Endocrine Gland Neoplasms, Neoplasms by Site, Neoplasms, Head and Neck Neoplasms, Parathyroid Diseases
Interventions
PTeye
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 4 Interventional Results available

Impact on Reducing the Incidence of Low Serum Calcium by Providing Educational Materials on the Need to Take Daily Supplemental Calcium and Vitamin D to Patients With Paget's Disease Treated With Reclast®

NCT00668200
View directory record Official record
Conditions
Paget's Disease of the Bone, Hypocalcemia
Interventions
Reclast (ZOL446, zoledronic acid), Calcium, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
Not listed
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
9
States / cities
Phoenix, Arizona • Tucson, Arizona • Gainesville, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2015 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 2 Interventional

A Study to Examine the Use of Zemplar to Increase Serum Calcium Levels in ICU Subjects

NCT00053378
View directory record Official record
Conditions
Hypocalcemia
Interventions
paricalcitol injection (Zemplar), Effects on calcium regulation, Administration of elemental Ca during hypocalcemic ICU pts.
Drug · Behavioral
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
9
States / cities
Merced, California • Denver, Colorado • Hudson, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2006 · Synced Jul 21, 2026, 10:34 AM 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 Jul 21, 2026, 10:34 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Phase I/II Thymus Transplantation With Immunosuppression #950

NCT00579527
View directory record Official record
Conditions
DiGeorge Anomaly, Complete DiGeorge Anomaly, Complete Atypical DiGeorge Anomaly, Complete DiGeorge Syndrome, Complete Atypical DiGeorge Syndrome
Interventions
Cultured Thymus Tissue for Implantation (CTTI), Cultured Thymus Tissue Implantation and Parental Parathyroid Transplantation, Blood Draw, Rabbit anti-thymocyte globulin, Cyclosporine, Tacrolimus, Methylprednisolone or Prednisolone, Daclizumab, Mycophenolate mofetil
Biological · Other · Procedure + 1 more
Lead sponsor
Sumitomo Pharma Switzerland GmbH
Industry
Eligibility
Not listed
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 2 Interventional Results available

PTH-independent Effects of Encaleret

NCT05735015
View directory record Official record
Conditions
Post-Surgical Hypoparathyroidism
Interventions
encaleret
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
18 Years to 100 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Equivalence of Calcium Gluconate and Calcium Chloride in Parturients

NCT05973747
View directory record Official record
Conditions
Postpartum Hemorrhage, Pregnancy Related, Hypocalcemia, Parturition Complication
Interventions
Calcium Gluconate, Calcium chloride
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Jul 21, 2026, 10:34 AM EDT
Active, not recruiting No phase listed Observational

Clinical Assessment of Low Calcium In traUMa (CALCIUM)

NCT05885256
View directory record Official record
Conditions
Hypocalcemia
Interventions
Amending current standard trauma order set
Diagnostic Test
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
391 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Feb 10, 2025 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 1 Interventional

Effect of CTAP101 Capsules on Ca/iPTH in Advanced Breast/Prostate Cancer Patients Treated With Denosumab/Zoledronic Acid

NCT02274623
View directory record Official record
Conditions
Breast Cancer, Prostate Cancer, Bone Neoplasms, Hypocalcemia, Hyperparathyroidism, Secondary
Interventions
CTAP101 Capsules
Drug
Lead sponsor
OPKO Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
6
States / cities
Long Beach, California • Miami, Florida • Evergreen Park, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Jul 21, 2026, 10:34 AM EDT
Recruiting Phase 2Phase 3 Interventional

Pharmacokinetics, Efficacy, and Safety of Encaleret in Pediatric Participants With Autosomal Dominant Hypocalcemia Type 1 (ADH1)

NCT07080385
View directory record Official record
Conditions
Autosomal Dominant Hypocalcemia Type 1 (ADH1)
Interventions
Encaleret
Drug
Lead sponsor
Calcilytix Therapeutics, Inc., a BridgeBio company
Industry
Eligibility
0 Years to 17 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
4
States / cities
New Haven, Connecticut • Washington D.C., District of Columbia • Jacksonville, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Not applicable Interventional Results available

Assessing Benefits of NIRAF Detection for Identifying Parathyroid Glands During Total Thyroidectomy.

NCT04281875
View directory record Official record
Conditions
Postoperative Hypoparathyroidism, Thyroid Neoplasms, Thyroid Cancer
Interventions
NIRAF Detection Technology
Device
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years to 99 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 16, 2024 · Synced Jul 21, 2026, 10:34 AM EDT
Completed No phase listed Observational

Studies of States With Resistance to Vitamin D and Parathyroid Hormone

NCT00001242
View directory record Official record
Conditions
Hypocalcemia, Pseudohypoparathyroidism, Osteomalacia, Rickets, Pseudopseudohpoparathyroidism
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
2 Months to 100 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced Jul 21, 2026, 10:34 AM 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 Jul 21, 2026, 10:34 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

COR-INSIGHT: Optimizing Cardiovascular and Cardiopulmonary Outcomes with AI-Driven Multiplexed Indications Using COR ECG Wearable

NCT06763549
View directory record Official record
Conditions
Cardiopulmonary Failure, Myocardial Infarction (MI), Heart Decompensation, Heart Failure, HFrEF - Heart Failure with Reduced Ejection Fraction, HFpEF - Heart Failure with Preserved Ejection Fraction, Syncopation, Syncope, Ischemic Cardiovascular Disease, STEMI, STEMI (ST Elevation MI), Atrial Fibrillation (AF), Atrial Enlargement, LVF, Conduction Defect, Conduction Abnormalities, Heart Block, Valvular Diseases, Cardiac Output, Low, Stroke Volume, Stroke Volume Variation, Hyperkalemia, Hypercalcemia, Hypocalcemia, LV Dysfunction, QT Prolongation, Sudden Cardiac Death Due to Cardiac Arrhythmia, Ventricular Arrhythmia, Pacing, Pacing Induced Dyssynchrony, Silent Ischemia, Pericarditis, Sleep Related Breathing Disorder, RSA, Apnea, Obstructive, Cardiac Output Measurement, Respiratory Impedance, CRT And/or ICD, Infarction, Cardiomyopathies, Primary, Hypertrophy
Interventions
SUBPROTOCOL A, SUBPROTOCOL B, SUBPROTOCOL C, SUBPROTOCOL D, SUBPROTOCOL E, SUBPROTOCOL F, SUBPROTOCOL G, SUBPROTOCOL H
Device
Lead sponsor
Peerbridge Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
15,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Melbourne, Florida
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Phase 3 Interventional Results available

HEXT (Hypo EXTended): Effect of PTH on Skeleton in Hypoparathyroidism

NCT01199614
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
open-label PTH(1-84)
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 85 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 4, 2024 · Synced Jul 21, 2026, 10:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Preoperative Calcium and Calcitriol Decrease Rates of Post Thyroidectomy Hypocalcemia?

NCT03869398
View directory record Official record
Conditions
Hypocalcemia, Thyroid Diseases
Interventions
Tums, Calcitriol
Dietary Supplement
Lead sponsor
Lahey Clinic
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Burlington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 8, 2019 · Synced Jul 21, 2026, 10:34 AM EDT
Terminated Phase 2 Interventional Results available

Teriparatide (Forteo) in the Treatment of Patients With Postoperative Hypocalcemia

NCT00623974
View directory record Official record
Conditions
Hypocalcemia
Interventions
Teriparatide (Forteo), Calcium, Calcitriol
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 5, 2012 · Synced Jul 21, 2026, 10:34 AM EDT
Active, not recruiting Phase 3 Interventional

Efficacy and Safety of Encaleret Compared to Standard of Care in Participants With ADH1

NCT05680818
View directory record Official record
Conditions
Autosomal Dominant Hypocalcemia (ADH)
Interventions
Encaleret, Standard of Care
Drug · Dietary Supplement
Lead sponsor
Calcilytix Therapeutics, Inc., a BridgeBio company
Industry
Eligibility
16 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
11
States / cities
Oakland, California • Aurora, Colorado • Indianapolis, Indiana + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Jul 21, 2026, 10:34 AM EDT