{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Calcium+stable+isotope",
    "query": {
      "intervention": "Calcium stable isotope"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-12T12:36:19.459Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01304407",
      "title": "Calcium Absorption in Patients With Rothmund-Thomson Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rothmund-Thomson Syndrome"
      ],
      "interventions": [
        {
          "name": "Calcium stable isotope",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 29,
      "start_date": "2011-03",
      "completion_date": "2017-02",
      "has_results": true,
      "last_update_posted_date": "2020-07-23",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01304407"
    },
    {
      "nct_id": "NCT02291315",
      "title": "Calcium Absorption in Postmenopausal Thai Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fractional Calcium Absorption"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "53 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "53 Years to 65 Years · Female only"
      },
      "enrollment_count": 22,
      "start_date": "2007-07",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2014-11-14",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Ithaca, New York",
      "locations": [
        {
          "city": "Ithaca",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02291315"
    },
    {
      "nct_id": "NCT00918645",
      "title": "Calcium-41 (41Ca) Chloride Aqueous Solution in Diagnosing Patients With Prostate Cancer and Bone Metastasis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metastatic Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "41 Ca",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 13,
      "start_date": "2009-09",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2017-12-22",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Livermore, California",
      "locations": [
        {
          "city": "Livermore",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00918645"
    },
    {
      "nct_id": "NCT03156179",
      "title": "Study of Calcium Metabolism in Teenage Girls With Type 1 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetes Mellitus, Type 1"
      ],
      "interventions": [
        {
          "name": "calcium isotope analysis",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "18 Years",
        "sex": "FEMALE",
        "summary": "9 Years to 18 Years · Female only"
      },
      "enrollment_count": 22,
      "start_date": "2015-09-01",
      "completion_date": "2016-12-31",
      "has_results": false,
      "last_update_posted_date": "2017-05-17",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03156179"
    },
    {
      "nct_id": "NCT00581828",
      "title": "Does Treatment of Hypovitaminosis D Increase Calcium Absorption?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoporosis",
        "Osteopenia",
        "Vitamin D Deficiency",
        "Hypoparathyroidism",
        "Hypercalciuria",
        "Hypercalcemia"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "66 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 66 Years · Female only"
      },
      "enrollment_count": 19,
      "start_date": "2005-01",
      "completion_date": "2008-12",
      "has_results": true,
      "last_update_posted_date": "2023-07-24",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00581828"
    },
    {
      "nct_id": "NCT00582972",
      "title": "Does Omeprazole Decrease Intestinal Calcium Absorption?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoporosis",
        "Achlorhydria",
        "GERD",
        "Hip Fracture"
      ],
      "interventions": [
        {
          "name": "Omeprazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 23,
      "start_date": "2008-01",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2013-02-15",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00582972"
    },
    {
      "nct_id": "NCT01119378",
      "title": "Study to Observe the Capability to Absorb Calcium as an Measure of Adequate Levels of Vitamin D",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postmenopausal",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Dual isotope technique",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Winthrop University Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 70 Years · Female only"
      },
      "enrollment_count": 76,
      "start_date": "2010-12",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2014-12-31",
      "last_synced_at": "2026-09-12T12:36:19.459Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01119378"
    }
  ]
}