{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Collect+24-hour+urine+specimen",
    "query": {
      "intervention": "Collect 24-hour urine specimen"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 15,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Collect+24-hour+urine+specimen&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T13:34:05.921Z",
  "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": "NCT04633811",
      "title": "Effect of Weight Loss on Urinary Oxalate Excretion in Obese Calcium Oxalate Kidney Stone Formers",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Stone"
      ],
      "interventions": [
        {
          "name": "Low Oxalate Diet before Weight Loss",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Oral load of oxalate and sucralose before Weight Loss",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Optifast VLCD Program",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Optifast VLCD Transition Phase",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Low Oxalate Diet after Weight Loss",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Oral load of oxalate and sucralose after Weight Loss",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "19 Years to 65 Years"
      },
      "enrollment_count": 14,
      "start_date": "2021-12-03",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-01",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04633811"
    },
    {
      "nct_id": "NCT02152033",
      "title": "Home-based Continuing Care for Young Adults Leaving Residential Substance Abuse Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use Disorders"
      ],
      "interventions": [
        {
          "name": "Home-based Continuing Care",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Services as Usual",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Treatment Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2014-07",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2023-03-28",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02152033"
    },
    {
      "nct_id": "NCT06616363",
      "title": "Does a Periaqueductal Gray-vagus Nerve Interface Malfunction Explain the Nat hx With Its Numerous Co-morbidities?",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "POTS - Postural Orthostatic Tachycardia Syndrome"
      ],
      "interventions": [
        {
          "name": "Questionnaires to be competed",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Provide list of medication and lifetime events",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Use phone App to record new life events",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Will wear an activity monitor",
          "type": "DEVICE"
        },
        {
          "name": "Periodic 24-hour urine sodium check",
          "type": "OTHER"
        },
        {
          "name": "A fMRI scan",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "A bedside tilt test will be performed",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "IV placed to collect blood samples",
          "type": "OTHER"
        },
        {
          "name": "Stool Sample",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DEVICE",
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "21 Years",
        "sex": "FEMALE",
        "summary": "12 Years to 21 Years · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2024-05-29",
      "completion_date": "2028-07",
      "has_results": false,
      "last_update_posted_date": "2025-09-26",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06616363"
    },
    {
      "nct_id": "NCT05229952",
      "title": "Assessment of Endogenous Oxalate Synthesis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy",
        "Kidney Stone",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Low-oxalate controlled diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Primed, continuous intravenous infusion of 13C2-oxalate",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 23,
      "start_date": "2022-02-10",
      "completion_date": "2024-09-09",
      "has_results": true,
      "last_update_posted_date": "2025-05-13",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05229952"
    },
    {
      "nct_id": "NCT03462979",
      "title": "Effects of Home Gluten Immunogenic Peptide Testing on Children With Celiac Disease",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Celiac Disease",
        "Gluten Sensitivity",
        "Gluten Enteropathy",
        "Gastrointestinal Disease",
        "Digestive System Disease",
        "Diet Modification",
        "Intestinal Disease",
        "Malabsorption Syndromes",
        "Patient Compliance",
        "Diagnostic Self Evaluation",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Immunochromatographic lateral flow test",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Years to 18 Years"
      },
      "enrollment_count": 120,
      "start_date": "2018-04-15",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03462979"
    },
    {
      "nct_id": "NCT04437225",
      "title": "Renal Metabolism of Glycolate to Oxalate",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Low oxalate controlled Diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Primed, continuous intravenous infusion of 13C2-Glycolate",
          "type": "OTHER"
        },
        {
          "name": "Bolus intravenous infusion of 13C2-Glycolate",
          "type": "OTHER"
        },
        {
          "name": "Oral bolus administration of 13C2-Glycolate",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 15,
      "start_date": "2020-03-12",
      "completion_date": "2030-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04437225"
    },
    {
      "nct_id": "NCT07647068",
      "title": "Autologous Tumor Infiltrating Lymphocytes With Interleukin-2 for the Treatment of Locally Advanced, Recurrent or Metastatic Gastrointestinal Stromal Tumors",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Locally Advanced Gastrointestinal Stromal Tumor",
        "Metastatic Gastrointestinal Stromal Tumor",
        "Recurrent Gastrointestinal Stromal Tumor",
        "Refractory Malignant Gastrointestinal Stromal Tumor",
        "Unresectable Malignant Gastrointestinal Stromal Tumor"
      ],
      "interventions": [
        {
          "name": "Aldesleukin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Chest Radiography",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Multigated Acquisition Scan",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Surgical Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Tumor Infiltrating Lymphocyte Therapy",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Joal Beane",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 59,
      "start_date": "2026-08-15",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07647068"
    },
    {
      "nct_id": "NCT02404701",
      "title": "Effect of Over-the-counter Dietary Supplements on Kidney Stone Risk",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperoxaluria"
      ],
      "interventions": [
        {
          "name": "Aloe vera with cactus",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Cranberry",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Green tea extract",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Bilberry",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Cinnamon",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Milk thistle",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Turmeric",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Aloe vera",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 45,
      "start_date": "2015-02",
      "completion_date": "2016-10",
      "has_results": false,
      "last_update_posted_date": "2016-10-27",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02404701"
    },
    {
      "nct_id": "NCT04293900",
      "title": "Diet, Physical Activity and Body Composition Changes During R-CHOP",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non-Hodgkin Lymphoma",
        "DLBCL",
        "Diffuse Large B Cell Lymphoma"
      ],
      "interventions": [
        {
          "name": "24-hour dietary recall",
          "type": "OTHER"
        },
        {
          "name": "Hand grip strength",
          "type": "OTHER"
        },
        {
          "name": "International Physical Activity Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Patient-reported outcomes survey",
          "type": "OTHER"
        },
        {
          "name": "Pittsburgh Sleep Quality Index",
          "type": "OTHER"
        },
        {
          "name": "Functional Assessment of Cancer Treatment - Lymphoma",
          "type": "OTHER"
        },
        {
          "name": "urine sample (optional)",
          "type": "OTHER"
        },
        {
          "name": "fecal sample (optional)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "George Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2021-01",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2020-10-06",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04293900"
    },
    {
      "nct_id": "NCT02723682",
      "title": "National Health and Nutrition Examination Survey 24-hour Urine Collection Feasibility Study, 2013",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Collect 24-hour urine specimen",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Centers for Disease Control and Prevention",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "69 Years",
        "sex": "ALL",
        "summary": "20 Years to 69 Years"
      },
      "enrollment_count": 282,
      "start_date": "2013-03",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2016-03-30",
      "last_synced_at": "2026-09-28T13:34:05.921Z",
      "location_count": 1,
      "location_summary": "Hyattsville, Maryland",
      "locations": [
        {
          "city": "Hyattsville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02723682"
    }
  ]
}