{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Stable+isotopes&page=4",
    "query": {
      "intervention": "Stable isotopes",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 115,
    "total_pages": 12,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Stable+isotopes&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Stable+isotopes&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-10T19:45:36.038Z",
  "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": "NCT00001651",
      "title": "Use of Labeled Glucose to Study Lymphocyte Replication and Survival in HIV-Infected Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "HIV",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "[6,6-2H2]-glucose",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "1998-02-25",
      "completion_date": "2020-05-29",
      "has_results": false,
      "last_update_posted_date": "2020-06-01",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001651"
    },
    {
      "nct_id": "NCT05159427",
      "title": "Pharmacokinetic Study of Single-Dose Modified Release Glipizide in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Human Gastrointestinal Physiology Data"
      ],
      "interventions": [
        {
          "name": "Glucotrol XL 5Mg Extended-Release Tablet",
          "type": "DRUG"
        },
        {
          "name": "Glipizide ER 5 MG 24 HR Extended Release Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Rifaximin 200Mg Tab",
          "type": "DRUG"
        },
        {
          "name": "13C6-Glipizide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 30,
      "start_date": "2022-03-15",
      "completion_date": "2026-03-29",
      "has_results": false,
      "last_update_posted_date": "2026-07-20",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05159427"
    },
    {
      "nct_id": "NCT07254403",
      "title": "Anabolic Response to Beef vs Plant Protein in (Pre)Frail Older Adults Using a Novel Stable Isotope Pulse Method",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Protein Metabolism"
      ],
      "interventions": [
        {
          "name": "Beef",
          "type": "OTHER"
        },
        {
          "name": "Tofu",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Texas A&M University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "65 Years to 95 Years"
      },
      "enrollment_count": 60,
      "start_date": "2025-10-31",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2025-11-28",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "College Station, Texas",
      "locations": [
        {
          "city": "College Station",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07254403"
    },
    {
      "nct_id": "NCT01371396",
      "title": "Effect of Dietary Macronutrient Composition",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Non-alcoholic Fatty Liver Disease",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Low-fat diet",
          "type": "OTHER"
        },
        {
          "name": "Low-carbohydrate diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "20 Years to 65 Years"
      },
      "enrollment_count": 24,
      "start_date": "2007-09-01",
      "completion_date": "2013-12-31",
      "has_results": false,
      "last_update_posted_date": "2019-02-06",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01371396"
    },
    {
      "nct_id": "NCT01544868",
      "title": "Total Energy Expenditure, Protein Kinetics, and Body Composition in Recovering Burn Children.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Energy Expenditure in Burn Children",
        "Protein Turnover in Burn Children"
      ],
      "interventions": [
        {
          "name": "Use of Stable Isotope to Measure Energy Expenditure and Protein Turnover",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Shriners Hospitals for Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "2 Years to 18 Years"
      },
      "enrollment_count": 12,
      "start_date": "2011-11",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2014-08-20",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01544868"
    },
    {
      "nct_id": "NCT04933656",
      "title": "Use of Stable Carbon And Nitrogen Isotopes to Improve Dietary Assessment for Cardiovascular Disease",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Adults"
      ],
      "interventions": [
        {
          "name": "one 24 hr cycle of meals at a 2000 kcal level",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "one 24 hr cycle of meals at a 2000 kcal level + one serving sugar sweetened beverage",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "one 24 hr cycle of meals at a 2000 kcal level + two servings sugar sweetened beverage",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "one 24 hr cycle of meals at a 2000 kcal level + three serving sugar sweetened beverage",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "74 Years",
        "sex": "ALL",
        "summary": "21 Years to 74 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-08",
      "completion_date": "2022-02",
      "has_results": false,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04933656"
    },
    {
      "nct_id": "NCT00583232",
      "title": "Protein and Energy Metabolism in Pediatric Crohn's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Crohn's Disease",
        "Protein Metabolism",
        "Energy Metabolism"
      ],
      "interventions": [
        {
          "name": "Stable isotope infusions",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "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": 15,
      "start_date": "2006-02",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2017-03-16",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00583232"
    },
    {
      "nct_id": "NCT00181753",
      "title": "Study of Glutamate and Glutamine Metabolism in Burn Patients Receiving Enteral or Parenteral Nutrition",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Burns"
      ],
      "interventions": [
        {
          "name": "standard vs. glutamine enteral or parenteral feeding.",
          "type": "DRUG"
        },
        {
          "name": "Stable isotope tracer study",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Stable isotope study",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Massachusetts General Hospital",
      "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": "2009-11",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2017-01-13",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00181753"
    },
    {
      "nct_id": "NCT02101996",
      "title": "Pilot Study to Test Dietary Fat Delivery",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "high-fat diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "30 Years to 50 Years"
      },
      "enrollment_count": 9,
      "start_date": "2014-06",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2016-08-19",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02101996"
    },
    {
      "nct_id": "NCT07516509",
      "title": "Determining Cell- and Spatially-distinct Skeletal Muscle Transcriptional Aberrations in Insulin Resistance",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "VO2 Max",
          "type": "OTHER"
        },
        {
          "name": "DEXA",
          "type": "OTHER"
        },
        {
          "name": "Peripheral Microvascular Reactivity",
          "type": "OTHER"
        },
        {
          "name": "Skeletal Muscle Insulin Sensitivity",
          "type": "OTHER"
        },
        {
          "name": "Non-Oxidative Glucose Disposal",
          "type": "OTHER"
        },
        {
          "name": "Muscle tissue Biopsy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "AdventHealth Translational Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "30 Years to 65 Years"
      },
      "enrollment_count": 36,
      "start_date": "2026-06-11",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-12",
      "last_synced_at": "2026-10-10T19:45:36.038Z",
      "location_count": 1,
      "location_summary": "Orlando, Florida",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07516509"
    }
  ]
}