{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+glucose+tolerance+testing+%28OGTT%29&page=5",
    "query": {
      "intervention": "Oral glucose tolerance testing (OGTT)",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 146,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+glucose+tolerance+testing+%28OGTT%29&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+glucose+tolerance+testing+%28OGTT%29&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T10:10:28.196Z",
  "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": "NCT01409993",
      "title": "Renin-Angiotensin and Fibrinolysis in Humans: Effect of Long-Term PDE5 Inhibition on Glucose Homeostasis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Impaired Glucose Tolerance"
      ],
      "interventions": [
        {
          "name": "Sildenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Hyperglycemic clamp",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Euglycemic clamp",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2011-08",
      "completion_date": "2016-11",
      "has_results": true,
      "last_update_posted_date": "2017-04-17",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01409993"
    },
    {
      "nct_id": "NCT05219994",
      "title": "Targeting the Carotid Bodies to Reduce Disease Risk Along the Diabetes Continuum",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Hyperoxia Exposure",
          "type": "OTHER"
        },
        {
          "name": "Normoxia Exposure",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Missouri-Columbia",
      "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": 22,
      "start_date": "2020-09-09",
      "completion_date": "2023-05-10",
      "has_results": false,
      "last_update_posted_date": "2023-07-27",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05219994"
    },
    {
      "nct_id": "NCT02936687",
      "title": "Mechanisms of Cerebrovascular Control",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metabolic Syndrome X"
      ],
      "interventions": [
        {
          "name": "NOS Inhibition",
          "type": "DRUG"
        },
        {
          "name": "ET-1 Inhibition",
          "type": "DRUG"
        },
        {
          "name": "NOS Inhibition Placebo",
          "type": "DRUG"
        },
        {
          "name": "3 Tesla MRI",
          "type": "DEVICE"
        },
        {
          "name": "Intravenous Catheter",
          "type": "DEVICE"
        },
        {
          "name": "Oral Glucose Tolerance Test",
          "type": "OTHER"
        },
        {
          "name": "ET-1 Inhibition Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "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": 59,
      "start_date": "2017-01-31",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2021-10-18",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02936687"
    },
    {
      "nct_id": "NCT00287443",
      "title": "Metabolic Abnormalities in Hispanic Children With Cystic Fibrosis",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Oral Glucose tolerance test",
          "type": "PROCEDURE"
        },
        {
          "name": "Whole body protein turnover",
          "type": "PROCEDURE"
        },
        {
          "name": "IV glucose tolerance test",
          "type": "PROCEDURE"
        },
        {
          "name": "Indirect Calorimetry",
          "type": "PROCEDURE"
        },
        {
          "name": "Dual Energy X-ray Absorptiometry (DEXA)",
          "type": "PROCEDURE"
        },
        {
          "name": "Growth Hormone Stimulation Test",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "7 Years to 17 Years"
      },
      "enrollment_count": 0,
      "start_date": "2006-02-02",
      "completion_date": "2006-02-02",
      "has_results": false,
      "last_update_posted_date": "2018-12-26",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00287443"
    },
    {
      "nct_id": "NCT04860336",
      "title": "Glycemic Observation and Metabolic Outcomes in Mothers and Offspring",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gestational Diabetes",
        "Pregnancy Related"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 2179,
      "start_date": "2021-04-01",
      "completion_date": "2025-07-18",
      "has_results": false,
      "last_update_posted_date": "2026-04-16",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 9,
      "location_summary": "New Haven, Connecticut • Honolulu, Hawaii • Chicago, Illinois + 5 more",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04860336"
    },
    {
      "nct_id": "NCT02013557",
      "title": "Text-message Reminders to Increase Rates of Postpartum Diabetes Screening in Women With Gestational Diabetes",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetes, Gestational"
      ],
      "interventions": [
        {
          "name": "Text-message reminder",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 57,
      "start_date": "2014-01",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2016-01-06",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02013557"
    },
    {
      "nct_id": "NCT05639556",
      "title": "Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "BMI and lean mass index from DXA",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Anthropometric Measurements",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hand-grip strength",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Six-minute walk Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sit-to-Stand Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Short physical performance battery (SPPB)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "BIA Sub-study",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Accelerometry to assess physical activity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Gastrointestinal (GI) and nutrition questionnaires:",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: PHQ-8",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: GAD-7",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: The Treatment Self-Regulation Questionnaire (TSRQ)",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: CF Fatalism Scale",
          "type": "OTHER"
        },
        {
          "name": "Psychosocial questionnaire: Body Esteem Scale for Adolescents and Adults (BESAA)",
          "type": "OTHER"
        },
        {
          "name": "12-month Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Oral glucose tolerance testing (OGTT)",
          "type": "OTHER"
        },
        {
          "name": "Continuous glucose monitoring (CGM)",
          "type": "DEVICE"
        },
        {
          "name": "Chest CT scans (When available within the past 6 months in medical records)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hologic Dual X-Ray Absorptiometry (DXA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrasound Sub-study of assessment of appendage muscles using ultrasound",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Psychosocial questionnaire: Hunger Vital Sign questionnaire",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Respiratory symptom questionnaire: CRISS",
          "type": "OTHER"
        },
        {
          "name": "Spirometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Psychosocial questionnaire: Additional Health Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "CF Management Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Food Frequency Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2023-04-20",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-13",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 23,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Atlanta, Georgia + 19 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05639556"
    },
    {
      "nct_id": "NCT02513641",
      "title": "Effect of 2-Week Nightly Moderate Hypoxia on Glucose Tolerance in Individuals With Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Hypoxico Altitude Training Systems",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Pennington Biomedical Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "20 Years to 65 Years"
      },
      "enrollment_count": 8,
      "start_date": "2015-12",
      "completion_date": "2020-09",
      "has_results": true,
      "last_update_posted_date": "2020-10-12",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 2,
      "location_summary": "Baton Rouge, Louisiana",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        },
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02513641"
    },
    {
      "nct_id": "NCT00004984",
      "title": "The Diabetes Prevention Trial of Type 1 Diabetes (DPT-1)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 1"
      ],
      "interventions": [
        {
          "name": "Parenteral Insulin",
          "type": "DRUG"
        },
        {
          "name": "Close Observation",
          "type": "OTHER"
        },
        {
          "name": "Oral Insulin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "3 Years to 45 Years"
      },
      "enrollment_count": 711,
      "start_date": "1994-02",
      "completion_date": "2003-06",
      "has_results": false,
      "last_update_posted_date": "2020-04-24",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 14,
      "location_summary": "Los Angeles, California • San Francisco, California • Stanford, California + 10 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004984"
    },
    {
      "nct_id": "NCT00802204",
      "title": "Dopamine and Insulin Resistance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "PET scan",
          "type": "RADIATION"
        },
        {
          "name": "Oral glucose tolerance test",
          "type": "PROCEDURE"
        },
        {
          "name": "MRI",
          "type": "PROCEDURE"
        },
        {
          "name": "Psychological scales to assess attitudes and behaviors related to eating and quality of life",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Caloric Restriction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE",
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 28,
      "start_date": "2008-12",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2017-05-10",
      "last_synced_at": "2026-10-13T10:10:28.196Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00802204"
    }
  ]
}