{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Breath+carbon+monoxide+test",
    "query": {
      "intervention": "Breath carbon monoxide test"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 17,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Breath+carbon+monoxide+test&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T09:51:53.379Z",
  "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": "NCT05074875",
      "title": "COVID-19 Respiratory Outcomes Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Questionnaires and Patient Reported Outcomes (PROs)",
          "type": "OTHER"
        },
        {
          "name": "Nasal Swab COVID-19 reverse transcription polymerase chain reaction test (RT-PCR)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood Samples for Biomarkers",
          "type": "GENETIC"
        },
        {
          "name": "High Resolution Computed Tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Physical Exam and Vital Signs",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Medical Research Council Sum Score",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hand Grip Strength",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Spirometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Diffusing Capacity of Carbon Monoxide",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "6 Minute Walk Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sit to Stand (STS) Measurement",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST",
        "GENETIC"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 37,
      "start_date": "2021-01-15",
      "completion_date": "2023-05-09",
      "has_results": false,
      "last_update_posted_date": "2023-07-27",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 4,
      "location_summary": "St Louis, Missouri • New York, New York • Houston, Texas",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05074875"
    },
    {
      "nct_id": "NCT00960375",
      "title": "Smoking Cessation for Veterans With Severe and Persistent Mental Illness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Schizoaffective Disorder",
        "Schizophrenia",
        "Affective Psychosis, Bipolar",
        "Affective Disorders, Psychotic"
      ],
      "interventions": [
        {
          "name": "BTSCS",
          "type": "BEHAVIORAL"
        },
        {
          "name": "StSST",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 179,
      "start_date": "2010-04",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2015-08-18",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Baltimore, Maryland",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00960375"
    },
    {
      "nct_id": "NCT02500238",
      "title": "Comparison of Smoking and Vaping in Families",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Saliva sample",
          "type": "OTHER"
        },
        {
          "name": "Urine Sample",
          "type": "OTHER"
        },
        {
          "name": "Toe nail clippings",
          "type": "OTHER"
        },
        {
          "name": "Breath carbon monoxide test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 44,
      "start_date": "2015-11",
      "completion_date": "2016-11",
      "has_results": false,
      "last_update_posted_date": "2018-12-28",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02500238"
    },
    {
      "nct_id": "NCT05480904",
      "title": "Characterizing Sleep Among Long-term Survivors of Childhood Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "ALL, Adult",
        "CNS Tumor",
        "Solid Tumor"
      ],
      "interventions": [
        {
          "name": "Neurocognitive (Thinking) Testing",
          "type": "OTHER"
        },
        {
          "name": "CNS Vital Signs (Thinking) Testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Health Questionnaires, Sleep Surveys & Sleep Diary",
          "type": "OTHER"
        },
        {
          "name": "Echocardiography/EKG",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Pulmonary Function",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Remote Polysomnography",
          "type": "DEVICE"
        },
        {
          "name": "Physical Function",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST",
        "DEVICE"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 199,
      "start_date": "2023-04-17",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-19",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05480904"
    },
    {
      "nct_id": "NCT04662658",
      "title": "Hyperpolarized Xenon-129 MR Imaging of the Lung",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "E-Cig Use"
      ],
      "interventions": [
        {
          "name": "Hyperpolarized Xenon -129 MRI",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2020-11-05",
      "completion_date": "2025-12",
      "has_results": false,
      "last_update_posted_date": "2020-12-10",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04662658"
    },
    {
      "nct_id": "NCT00862927",
      "title": "Cue Reactivity in Virtual Reality: The Role of Context",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Breath Sample",
          "type": "OTHER"
        },
        {
          "name": "Saliva Sample",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        },
        {
          "name": "View Virtual Reality Scenes",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2009-03",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2012-06-20",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00862927"
    },
    {
      "nct_id": "NCT02195570",
      "title": "Contingency Management for Smoking Cessation in Pregnant Minority Women",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking"
      ],
      "interventions": [
        {
          "name": "Quit Smoking Now (QSN)",
          "type": "OTHER"
        },
        {
          "name": "Prize-based Contingency Management (CM)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Miami",
      "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": 0,
      "start_date": "2015-10",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2019-05-09",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02195570"
    },
    {
      "nct_id": "NCT05075213",
      "title": "QuitBet Phase II: A Digital Social Game That Pays You to Stop Smoking",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "contingency management (deposit contract)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "leaderboard and social feed",
          "type": "BEHAVIORAL"
        },
        {
          "name": "smoking cessation resource list",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "WayBetter, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 245,
      "start_date": "2021-11-01",
      "completion_date": "2024-07-27",
      "has_results": true,
      "last_update_posted_date": "2026-02-27",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Wilmington, Delaware",
      "locations": [
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05075213"
    },
    {
      "nct_id": "NCT05041959",
      "title": "Nicotine Withdrawal and Reward Processing",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cigarette Smoking",
        "Nicotine Dependence",
        "Nicotine Withdrawal"
      ],
      "interventions": [
        {
          "name": "Smoking Abstinence",
          "type": "OTHER"
        },
        {
          "name": "Ad Lib Smoking",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "21 Years to 55 Years"
      },
      "enrollment_count": 58,
      "start_date": "2022-06-02",
      "completion_date": "2024-04-15",
      "has_results": false,
      "last_update_posted_date": "2024-05-08",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Tulsa, Oklahoma",
      "locations": [
        {
          "city": "Tulsa",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05041959"
    },
    {
      "nct_id": "NCT04419922",
      "title": "A Digital Smoking Cessation Intervention for Adults With Substance Use Disorder",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tobacco Use Disorder",
        "Substance Use Disorders"
      ],
      "interventions": [
        {
          "name": "Smartphone Contingency Management Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "BrightView LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2020-04-02",
      "completion_date": "2021-01-15",
      "has_results": false,
      "last_update_posted_date": "2020-06-09",
      "last_synced_at": "2026-09-26T09:51:53.379Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04419922"
    }
  ]
}