| Recruiting | Postoperative Hypocalcemia After Thyroidectomy NCT07428057 | Minia University | — |
| Recruiting | Comparing PTeye-assisted Versus Conventional Total Thyroidectomy NCT07416149 | The University of Hong Kong | N/A |
| Not Yet Recruiting | WHITE CAP: Intra-operative Parathyroid Tissue Sensor (PTS)-Guided Assessment of Parathyroid Viability and Surg NCT07043010 | Fujian Medical University | N/A |
| Not Yet Recruiting | Calcium Administration in Life-saving Management During Massive Hemorrhage NCT06820645 | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | Phase 2 / Phase 3 |
| Withdrawn | Empiric Calcium in Massive Transfusion NCT05953376 | University of California, Irvine | Phase 3 |
| Enrolling By Invitation | COR-INSIGHT: Optimizing Cardiovascular and Cardiopulmonary Outcomes with AI-Driven Multiplexed Indications Usi NCT06763549 | Peerbridge Health, Inc | — |
| Active Not Recruiting | Hypoglycemia Prevention and Awareness Program NCT06775288 | Merve DerviAYoAYlu | N/A |
| Recruiting | The Use of Dexamethasone in Total Thyroidectomy to Improve Voice Outcome and Hypocalcaemia NCT05732883 | Tseung Kwan O Hospital, Hong Kong | Phase 2 |
| Completed | A Comparative Analysis of Hypocalcemia Incidence in Patients Undergoing Thyroidectomy: Ligasure vs Conventiona NCT06716632 | Gulab Devi Hospital | N/A |
| Completed | Pharmacokinetic Equivalence of Calcium Gluconate and Calcium Chloride in Parturients NCT05973747 | Stanford University | EARLY_Phase 1 |
| Unknown | Comparison of Liagure Safety in Thyroidectomy With Conventional Thyroidectomy NCT05684536 | Imam Mohammad ibn Saud Islamic University | N/A |
| Unknown | Effect of Preoperative High-dose Cholecalciferol in Prevention of Post-thyroidectomy Hypocalcaemia NCT05586529 | Pak Emirates Military Hospital | N/A |
| Active Not Recruiting | Clinical Assessment of Low Calcium In traUMa (CALCIUM) NCT05885256 | Brooke Army Medical Center | — |
| Completed | Near-infrared Autofluorescence (NIRAF)-Guided Total Thyroidectomy: Impact in Low-volume, Non-parathyroid Insti NCT05043584 | Regional Hospital West Jutland | N/A |
| Recruiting | Total Post-thyroidectomy Hypocalcemia After Preoperative Cholecalciferol Supplementation NCT04775381 | Hôpital NOVO | Phase 3 |
| Completed | Effect of Vitamin D Supplement on Disease Activity in SLE NCT05260255 | Department of Medical Services Ministry of Public Health of Thailand | N/A |
| Completed | Prevention of Postoperative Hypocalcemia of Oral Vitamin D Supplementation Before Total Thyroidectomy NCT05216419 | Seoul National University Hospital | Phase 4 |
| Completed | Injection of Teriparatide to Prevent Hypocalcemia After Parathyroidectomy in Dialysis Patients (TeriCa). NCT04750460 | Saint Petersburg State University, Russia | Phase 3 |
| Unknown | The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients. NCT04412694 | Medical University of Lodz | Phase 4 |
| Unknown | Is Correcting Total Serum Calcium Levels Important After Thyroidectomy NCT04304573 | University Hospital Sestre Milosrdnice | — |
| Unknown | Prophylactic Infusion of Calcium Gluconate Reducing the Rate of Hypocalcaemia After Total Thyroidectomy NCT04491357 | University of Malaya | Phase 4 |
| Unknown | Is There Benefit From Early Postoperative PTH Monitoring? NCT04160637 | University Hospital Sestre Milosrdnice | — |
| Unknown | Near Infrared (NIR) Autofluorescence Image-guided Thyroid Surgery NCT04193332 | Rigshospitalet, Denmark | N/A |
| Unknown | Hypocalcemia in Infants and Children NCT03685877 | Assiut University | — |
| Completed | Hypomagnesemia and Hypocalcemia Association Following Thyroidectomy NCT04351451 | King Saud University | — |
| Recruiting | Registry for Hypoparathyroidism Wuerzburg NCT05585593 | University of Wuerzburg | — |
| Completed | Does Preoperative Calcium and Calcitriol Decrease Rates of Post Thyroidectomy Hypocalcemia? NCT03869398 | Lahey Clinic | N/A |
| Unknown | The Impact of Vitamin D Deficiency on Hypocalcaemia Following Total Thyroidectomy NCT03063060 | Hillel Yaffe Medical Center | — |
| Completed | Hypomagnesemia Associated With Proton-Pump Inhibitor Use NCT04426994 | Changi General Hospital | — |
| Unknown | Determination of Parathyroid Function by Fluorescence With Indocyanine Green (ICG) After Total Thyroidectomy NCT04012476 | Hospital Son Espases | Phase 4 |
| Completed | Parathyroid Autofluorescence Visualization in Thyroid Surgery: Impact on Postoperative Hypocalcemia NCT02892253 | Hôpital Européen Marseille | N/A |
| Unknown | Intra-operative Rapid Identification of Lymph Node and Parathyroid NCT03268785 | Xijing Hospital | N/A |
| Completed | Clinical Impact of Parathyroid Autofluorescence Visualization During Thyroid Surgery NCT02889952 | Hôpital Européen Marseille | — |
| Completed | Effect of CTAP101 Capsules on Ca/iPTH in Advanced Breast/Prostate Cancer Patients Treated With Denosumab/Zoled NCT02274623 | OPKO Health, Inc. | Phase 1 |
| Completed | Use of Prophylactic Steroids in the Prevention of Post-thyroidectomy Hypocalcaemia and Voice Dysfunction NCT04752852 | Holy Family Hospital, Pakistan | N/A |
| Completed | Early Prediction of Hypocalcaemia Following Thyroid Surgery NCT02853721 | University of Cagliari | N/A |
| Completed | Phase II Pre-operative Vitamin D Supplementation to Prevent Post-thyroidectomy Hypocalcemia NCT01868750 | David Shonka, MD | Phase 2 |
| Unknown | Parathyroid Hormone (PTH) Homeostasis in Bartter Syndrome NCT01021280 | Soroka University Medical Center | — |
| Unknown | Vitamin D Deficiency and Postoperative Hypocalcemia NCT01632514 | University of Sao Paulo General Hospital | Phase 4 |
| Unknown | Vitamin D Levels and Postoperative Hypocalcemia After Total Thyroidectomy NCT01039714 | Aristotle University Of Thessaloniki | — |
| Completed | Calcium and Vitamin D Intakes in Children NCT01638494 | Federico II University | N/A |
| Completed | Comparing Pump With Subcutaneous Injection Delivery of PTH 1-34 in the Management of Chronic Hypoparathyroidis NCT00743782 | National Institutes of Health Clinical Center (CC) | Phase 2 |
| Completed | Impact on Reducing the Incidence of Low Serum Calcium by Providing Educational Materials on the Need to Take D NCT00668200 | Novartis Pharmaceuticals | Phase 4 |
| Terminated | Teriparatide (Forteo) in the Treatment of Patients With Postoperative Hypocalcemia NCT00623974 | M.D. Anderson Cancer Center | Phase 2 |
| Completed | The No-Tie Technique Using the Harmonic Scalpel in Total Thyroidectomy With Central Neck Dissection: A Prospec NCT00506103 | Soonchunhyang University Hospital | — |
| Completed | Prevention of Hypocalcemia in Patients Undergoing Total Thyroidectomy Plus Central Neck Dissection NCT00630214 | Asan Medical Center | Phase 2 |
| Completed | Bioequivalency Study of Calcitriol Tablets Under Fasting Conditions NCT00601328 | Roxane Laboratories | N/A |
| Completed | A Study to Examine the Use of Zemplar to Increase Serum Calcium Levels in ICU Subjects NCT00053378 | Abbott | Phase 2 |
| Completed | Studies of States With Resistance to Vitamin D and Parathyroid Hormone NCT00001242 | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | — |
| Terminated | Studies With 1,25-Dihydroxycholecalciferol NCT00001151 | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | Phase 2 |
| Completed | Safety and Efficacy of Intravenous Magnesium Sulfate in Modulating Changes in Symptoms and Divalent Cation Lev NCT00002146 | Astra USA | Phase 4 |
| Withdrawn | Preoperative Vitamin D for Post-thyroidectomy Hypocalcemia NCT01609439 | University of Alberta | N/A |