{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Urinary+Tract+Stones&page=4",
    "query": {
      "condition": "Urinary Tract Stones",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 209,
    "total_pages": 21,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Urinary+Tract+Stones&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Urinary+Tract+Stones&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T03:25:10.233Z",
  "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": "NCT04495699",
      "title": "Asymptomatic Renal Calculi in Recurrent Urinary Tract Infections",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Urinary Tract Infections",
        "Kidney Stone"
      ],
      "interventions": [
        {
          "name": "None - observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 94,
      "start_date": "2020-09-09",
      "completion_date": "2025-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-10-21",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 5,
      "location_summary": "Phoenix, Arizona • San Diego, California • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04495699"
    },
    {
      "nct_id": "NCT06922006",
      "title": "Feasibility of Radiation-Free Percutaneus Nephrolithotomy for Kidney Stones",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Stones"
      ],
      "interventions": [
        {
          "name": "Percutaneus nephrolithotomy (PCNL)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 67,
      "start_date": "2024-03-26",
      "completion_date": "2025-06",
      "has_results": false,
      "last_update_posted_date": "2025-04-10",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06922006"
    },
    {
      "nct_id": "NCT02831556",
      "title": "Point of Care 3D Ultrasound for Various Applications: A Pilot Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Appendicitis",
        "Evidence of Cholecystectomy",
        "Gallstones",
        "Pregnancy, Ectopic",
        "Aortic Aneurysm",
        "Kidney Stones",
        "Intrauterine Pregnancy",
        "Diverticulitis",
        "Abdominal Injuries",
        "Tumors",
        "Pancreatitis",
        "Digestive System Diseases",
        "Gastrointestinal Diseases",
        "Intraabdominal Infections",
        "Intestinal Diseases",
        "Pregnancy",
        "Vascular Disease",
        "Uterine Fibroids",
        "Ovarian Cysts",
        "Uterine Abnominalies",
        "Bladder Abnominalies",
        "Testicular Abnominalies",
        "Polyps"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 174,
      "start_date": "2016-07",
      "completion_date": "2022-08-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-21",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02831556"
    },
    {
      "nct_id": "NCT00360477",
      "title": "FloSeal Tubeless Exit Versus Cope Loop Nephrostomy Versus Fascial Stitch Following Percutaneous Nephrolithotripsy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Calculi"
      ],
      "interventions": [
        {
          "name": "Floseal",
          "type": "PROCEDURE"
        },
        {
          "name": "Cope Loop",
          "type": "PROCEDURE"
        },
        {
          "name": "Fascial Stitch",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 59,
      "start_date": "2004-06",
      "completion_date": "2015-01",
      "has_results": false,
      "last_update_posted_date": "2016-12-13",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00360477"
    },
    {
      "nct_id": "NCT00959153",
      "title": "Extracorporeal Shock Wave Lithotriptor Indicated for Fragmenting Urinary Stones in the Kidney",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Kidney Stones"
      ],
      "interventions": [
        {
          "name": "LithoSpace Extracorporeal Shockwave Lithotripter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Advance Shockwave Technology GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2010-06",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2011-06-01",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 2,
      "location_summary": "Garden City, New York • New York, New York",
      "locations": [
        {
          "city": "Garden City",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00959153"
    },
    {
      "nct_id": "NCT00581178",
      "title": "Study to Determine if There Are Specific Clinical Factors to Determine Stent Encrustation",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Stones"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2008-04",
      "completion_date": "2011-12",
      "has_results": false,
      "last_update_posted_date": "2013-06-26",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00581178"
    },
    {
      "nct_id": "NCT03657667",
      "title": "Evaluation of Pain Before and After Removal of Non-obstructive Kidney Stones",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Stone"
      ],
      "interventions": [
        {
          "name": "Ureteroscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Centre hospitalier de l'Université de Montréal (CHUM)",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 43,
      "start_date": "2018-08-28",
      "completion_date": "2023-03-09",
      "has_results": false,
      "last_update_posted_date": "2023-04-04",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 8,
      "location_summary": "Davis, California • San Diego, California • Bloomington, Indiana + 5 more",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Bloomington",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03657667"
    },
    {
      "nct_id": "NCT04542590",
      "title": "Natural History of Patients With PH3 and a History of Stone Events",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Primary Hyperoxaluria Type 3"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Dicerna Pharmaceuticals, Inc., a Novo Nordisk company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2021-09-09",
      "completion_date": "2024-07-23",
      "has_results": false,
      "last_update_posted_date": "2024-12-02",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • New York, New York",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04542590"
    },
    {
      "nct_id": "NCT03656913",
      "title": "Validation of Low Dose CT for Diagnosis of Urolithiasis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nephrolithiasis",
        "Ureterolithiases"
      ],
      "interventions": [
        {
          "name": "Extremely low dose CT",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "4 Years to 20 Years"
      },
      "enrollment_count": 15,
      "start_date": "2018-11-30",
      "completion_date": "2020-09-28",
      "has_results": false,
      "last_update_posted_date": "2021-02-18",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03656913"
    },
    {
      "nct_id": "NCT06989320",
      "title": "Endogenous Oxalate Synthesis in Idiopathic Calcium Oxalate Kidney Stone Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Stones",
        "Kidney Calculi",
        "Urolithiasis",
        "Urolithiasis, Calcium Oxalate",
        "Nephrolithiasis",
        "Nephrolithiasis, Calcium Oxalate",
        "Oxalate Urolithiasis",
        "Healthy",
        "Healthy Volunteer"
      ],
      "interventions": [
        {
          "name": "Low-oxalate diet and glycolate dosing",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Oral glycolate dosing",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Oral 13C- ascorbic acid dosing",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 80,
      "start_date": "2025-05-27",
      "completion_date": "2031-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-06T03:25:10.233Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama • Dallas, Texas",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06989320"
    }
  ]
}