{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Exhaled+Nitric+Oxide&page=2",
    "query": {
      "condition": "Exhaled Nitric Oxide",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Exhaled+Nitric+Oxide&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T22:28:28.300Z",
  "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": "NCT04738422",
      "title": "Determining Airway pH by Compartmental Exhaled Nitric Oxide Levels During Alkaline Buffer Challenge",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Airway Disease"
      ],
      "interventions": [
        {
          "name": "Alkaline glycine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana 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": 150,
      "start_date": "2020-09-11",
      "completion_date": "2028-07-15",
      "has_results": false,
      "last_update_posted_date": "2025-12-09",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04738422"
    },
    {
      "nct_id": "NCT04941742",
      "title": "The Use of Fractionated Exhaled Nitric Oxide in the Diagnosis and Assessment of Disease Activity of Eosinophilic Esophagitis (Validation Phase)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Eosinophilic Esophagitis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "5 Years to 18 Years"
      },
      "enrollment_count": 71,
      "start_date": "2020-09-22",
      "completion_date": "2021-12-22",
      "has_results": false,
      "last_update_posted_date": "2024-05-10",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04941742"
    },
    {
      "nct_id": "NCT01227070",
      "title": "Airflow Obstruction and Biomarkers of Airway Inflammation During and Following Acute Exacerbations of Childhood Asthma",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Seattle Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Years to 18 Years"
      },
      "enrollment_count": 80,
      "start_date": "2006-01",
      "completion_date": "2010-03",
      "has_results": false,
      "last_update_posted_date": "2010-10-22",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01227070"
    },
    {
      "nct_id": "NCT01645397",
      "title": "Exhaled Nitric Oxide and Airway Caliber in Children With Asthma",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma in Children"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Atlantic Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2011-06",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-01-16",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Morristown, New Jersey",
      "locations": [
        {
          "city": "Morristown",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01645397"
    },
    {
      "nct_id": "NCT01318954",
      "title": "The Effect of Allergen Immunotherapy on Exhaled Nitric Oxide in Adult Patients With Asthma and Allergic Rhinitis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Allergic Asthma",
        "Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Allergen immunotherapy",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Rohr and Columbo Asthma, Allergy and Immunology Specialists, P.C.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2008-01",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2015-10-29",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Bryn Mawr, Pennsylvania",
      "locations": [
        {
          "city": "Bryn Mawr",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01318954"
    },
    {
      "nct_id": "NCT00732511",
      "title": "Coreg CR, Blood Vessel Stiffness and Blood Vessel Function",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Endothelial Function",
        "Diabetes Mellitus",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "carvedilol",
          "type": "DRUG"
        },
        {
          "name": "metoprolol extended release",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "State University of New York - Downstate Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 40,
      "start_date": "2008-04",
      "completion_date": "2009-04",
      "has_results": false,
      "last_update_posted_date": "2011-02-10",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Brooklyn, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00732511"
    },
    {
      "nct_id": "NCT02661984",
      "title": "Measurement of FeNO in Young Children With the NIOX VERO",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Aerocrine AB",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "4 Years to 6 Years"
      },
      "enrollment_count": 102,
      "start_date": "2016-01",
      "completion_date": "2017-05-31",
      "has_results": false,
      "last_update_posted_date": "2017-05-15",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 3,
      "location_summary": "Gilbert, Arizona • Blue Bell, Pennsylvania • Dallas, Texas",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Blue Bell",
          "state": "Pennsylvania"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02661984"
    },
    {
      "nct_id": "NCT00277446",
      "title": "Dietary Supplementation With Soy Isoflavones in Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Soy isoflavones",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 13,
      "start_date": "2006-01",
      "completion_date": "2007-04",
      "has_results": true,
      "last_update_posted_date": "2011-02-25",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00277446"
    },
    {
      "nct_id": "NCT00662051",
      "title": "Oral Contraceptives and Asthma Control",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Asthma",
        "Regulatory T Cell Function"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Kentucky",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2008-04",
      "completion_date": "2010-10",
      "has_results": false,
      "last_update_posted_date": "2013-08-09",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00662051"
    },
    {
      "nct_id": "NCT02100943",
      "title": "Exhaled NO as a Biomarker of Gestational OSA and Persistence Postpartum",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy",
        "OSA"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 76,
      "start_date": "2014-03",
      "completion_date": "2016-11-14",
      "has_results": false,
      "last_update_posted_date": "2017-04-20",
      "last_synced_at": "2026-07-23T22:28:28.300Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02100943"
    }
  ]
}