{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Breath+carbon+monoxide+measurement",
    "query": {
      "intervention": "Breath carbon monoxide measurement"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Breath+carbon+monoxide+measurement&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T07:40:06.986Z",
  "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": "NCT01031121",
      "title": "Breath Carbon Monoxide and Cotinine as Biomarkers to Distinguish Smokers From Nonsmokers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute on Drug Abuse (NIDA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 240,
      "start_date": "2009-06-08",
      "completion_date": "2010-10-22",
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01031121"
    },
    {
      "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": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00862927"
    },
    {
      "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": "2026-09-30T07:40:06.986Z",
      "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": "NCT06159348",
      "title": "Pilot Feasibility Study of a Novel Non-invasive Device for Diagnosis of Anemia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anemia"
      ],
      "interventions": [
        {
          "name": "Anemia Diagnostic Assistant (ADA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Serum hemoglobin",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "17 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "17 Years to 70 Years"
      },
      "enrollment_count": 25,
      "start_date": "2023-11-30",
      "completion_date": "2023-12-12",
      "has_results": false,
      "last_update_posted_date": "2024-07-24",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06159348"
    },
    {
      "nct_id": "NCT01820117",
      "title": "Brain Integrity in Survivors of Hodgkin Lymphoma Treated With Thoracic Radiation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hodgkin Lymphoma"
      ],
      "interventions": [
        {
          "name": "Neurocognitive Evaluation",
          "type": "OTHER"
        },
        {
          "name": "Quantitative Brain Imaging",
          "type": "OTHER"
        },
        {
          "name": "Neurologic Evaluation",
          "type": "OTHER"
        },
        {
          "name": "Health Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Vascular Testing",
          "type": "OTHER"
        },
        {
          "name": "Cardiopulmonary Exercise Testing",
          "type": "OTHER"
        },
        {
          "name": "Echocardiography",
          "type": "OTHER"
        },
        {
          "name": "Pulmonary Function Testing",
          "type": "OTHER"
        },
        {
          "name": "Serum Biomarkers",
          "type": "PROCEDURE"
        },
        {
          "name": "Ophthalmology Examination",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 416,
      "start_date": "2013-04-26",
      "completion_date": "2018-02-20",
      "has_results": false,
      "last_update_posted_date": "2018-03-01",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01820117"
    },
    {
      "nct_id": "NCT02513069",
      "title": "Mobile Contingency Management for Smoking Cessation in Returning US Veterans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Veterans"
      ],
      "interventions": [
        {
          "name": "Nicotine gum",
          "type": "OTHER"
        },
        {
          "name": "mobile contingency management",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Telephone counseling",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Nicotine patch",
          "type": "OTHER"
        },
        {
          "name": "Nicotine lozenge",
          "type": "OTHER"
        },
        {
          "name": "Smart phone",
          "type": "OTHER"
        },
        {
          "name": "Carbon monoxide monitor",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 291,
      "start_date": "2015-01",
      "completion_date": "2019-02-14",
      "has_results": false,
      "last_update_posted_date": "2020-02-21",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02513069"
    },
    {
      "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": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04419922"
    },
    {
      "nct_id": "NCT06544772",
      "title": "Study of a Smartphone-Based Switch Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Pivot cigarette smoking cessation program",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Pivot Health Technologies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 105,
      "start_date": "2024-08-16",
      "completion_date": "2025-06-09",
      "has_results": false,
      "last_update_posted_date": "2025-10-02",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "San Carlos, California",
      "locations": [
        {
          "city": "San Carlos",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06544772"
    },
    {
      "nct_id": "NCT01547117",
      "title": "Dietary Salt in Postural Tachycardia Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postural Orthostatic Tachycardia Syndrome"
      ],
      "interventions": [
        {
          "name": "Blood Volume",
          "type": "RADIATION"
        },
        {
          "name": "Total Blood Volume",
          "type": "RADIATION"
        },
        {
          "name": "Exercise Capacity Test - Bicycle",
          "type": "PROCEDURE"
        },
        {
          "name": "Posture Study",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 38,
      "start_date": "2012-03",
      "completion_date": "2021-12",
      "has_results": true,
      "last_update_posted_date": "2022-02-22",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01547117"
    },
    {
      "nct_id": "NCT03142932",
      "title": "COach2Quit TRIAL: Assessing a Prototype Personal Carbon Monoxide Monitor for Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Smoking",
        "Smoking Cessation"
      ],
      "interventions": [
        {
          "name": "Individualized carbon monoxide (iCO) monitor",
          "type": "DEVICE"
        },
        {
          "name": "COach2Quit smartphone application",
          "type": "OTHER"
        },
        {
          "name": "Cessation counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 102,
      "start_date": "2017-05-17",
      "completion_date": "2017-11-30",
      "has_results": true,
      "last_update_posted_date": "2019-10-04",
      "last_synced_at": "2026-09-30T07:40:06.986Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03142932"
    }
  ]
}