{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Glucose+Tolerance+Test+%28OGTT%29",
    "query": {
      "intervention": "Oral Glucose Tolerance Test (OGTT)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 150,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Glucose+Tolerance+Test+%28OGTT%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T23:49:20.985Z",
  "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": "NCT02689661",
      "title": "Impact of the Metabolic Syndrome on the Incidence of Neuropathy in Obese Subjects",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Metabolic Syndrome",
        "Obesity",
        "Neuropathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Brian Callaghan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 177,
      "start_date": "2010-11",
      "completion_date": "2019-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02689661"
    },
    {
      "nct_id": "NCT04101045",
      "title": "Pathogenesis of the Cardiometabolic Risk in Youth With Type 1 Diabetes",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 1 Diabetes",
        "De Novo Lipogenesis"
      ],
      "interventions": [
        {
          "name": "Oral Glucose Tolerance Test",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "22 Years",
        "sex": "ALL",
        "summary": "13 Years to 22 Years"
      },
      "enrollment_count": 7,
      "start_date": "2019-11-21",
      "completion_date": "2022-03-30",
      "has_results": false,
      "last_update_posted_date": "2023-02-13",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04101045"
    },
    {
      "nct_id": "NCT06887543",
      "title": "The Impact of Time Restricted Eating on Type 2 Diabetes",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Meal timing",
          "type": "OTHER"
        },
        {
          "name": "Time restricted eating",
          "type": "OTHER"
        },
        {
          "name": "Usual feeding pattern.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rockefeller University",
      "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": 2,
      "start_date": "2025-05-29",
      "completion_date": "2025-08-04",
      "has_results": false,
      "last_update_posted_date": "2026-01-20",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06887543"
    },
    {
      "nct_id": "NCT01856946",
      "title": "Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "4,000 IU vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "9 Years to 19 Years"
      },
      "enrollment_count": 15,
      "start_date": "2013-05",
      "completion_date": "2014-02",
      "has_results": false,
      "last_update_posted_date": "2016-10-10",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01856946"
    },
    {
      "nct_id": "NCT01199029",
      "title": "Single Dose Study Of PF-04308515 And Prednisone On Carbohydrate",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "PF-04308515",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 18,
      "start_date": "2010-08",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2010-12-16",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Kalamazoo, Michigan",
      "locations": [
        {
          "city": "Kalamazoo",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01199029"
    },
    {
      "nct_id": "NCT00433173",
      "title": "Insulin Sensitivity in Men With the Metabolic Syndrome",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "intravenous glucose tolerance test",
          "type": "PROCEDURE"
        },
        {
          "name": "testosterone",
          "type": "DRUG"
        },
        {
          "name": "anastrozole",
          "type": "DRUG"
        },
        {
          "name": "goserelin acetate implant",
          "type": "DRUG"
        },
        {
          "name": "aerobic capacity (VO2 Max)",
          "type": "PROCEDURE"
        },
        {
          "name": "MRI",
          "type": "PROCEDURE"
        },
        {
          "name": "muscle biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "measurement of resting metabolic rate (energy expenditure)",
          "type": "PROCEDURE"
        },
        {
          "name": "Dual energy x-ray absorptiometry",
          "type": "PROCEDURE"
        },
        {
          "name": "Fasting oral glucose tolerance test",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "50 Years to 75 Years · Male only"
      },
      "enrollment_count": 72,
      "start_date": "2006-05",
      "completion_date": "2011-03",
      "has_results": false,
      "last_update_posted_date": "2010-03-02",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Boston, Massachusetts",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00433173"
    },
    {
      "nct_id": "NCT07020741",
      "title": "Stable Isotopes- Adults With Obesity",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obese Patients (BMI ≥ 30 kg/m²)",
        "Glucose Metabolism",
        "Protein Metabolism"
      ],
      "interventions": [
        {
          "name": "Indispensable Amino Acid Oxidation",
          "type": "PROCEDURE"
        },
        {
          "name": "Stable Isotope Oral Glucose Tolerance Test",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Illinois at Urbana-Champaign",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "19 Years to 59 Years"
      },
      "enrollment_count": 8,
      "start_date": "2025-09-12",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Urbana, Illinois",
      "locations": [
        {
          "city": "Urbana",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07020741"
    },
    {
      "nct_id": "NCT04437459",
      "title": "The Reproducibility and Clinical Utility of an Abbreviated Fat Tolerance Test",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dyslipidemias",
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "High-fat shake",
          "type": "OTHER"
        },
        {
          "name": "Pure glucose solution",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Oklahoma State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 22,
      "start_date": "2018-10-08",
      "completion_date": "2019-07-31",
      "has_results": false,
      "last_update_posted_date": "2020-06-18",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Stillwater, Oklahoma",
      "locations": [
        {
          "city": "Stillwater",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04437459"
    },
    {
      "nct_id": "NCT02122666",
      "title": "Composition & Function of Sarcoplasmic Reticulum in Persons With the Metabolic Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "muscle biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 27,
      "start_date": "2014-03",
      "completion_date": "2024-02-15",
      "has_results": true,
      "last_update_posted_date": "2024-10-26",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02122666"
    },
    {
      "nct_id": "NCT06642610",
      "title": "CGM Dynamic Index for Predicting Prediabetes in Cystic Fibrosis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prediabetes",
        "Cystic Fibrosis (CF)",
        "Cystic Fibrosis-related Diabetes"
      ],
      "interventions": [
        {
          "name": "CGM Dynamic Index (CDI)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "12 Years to 55 Years"
      },
      "enrollment_count": 70,
      "start_date": "2025-06-15",
      "completion_date": "2026-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-07-29",
      "last_synced_at": "2026-09-01T23:49:20.985Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06642610"
    }
  ]
}