{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HEPA+filtration",
    "query": {
      "intervention": "HEPA filtration"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 18,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HEPA+filtration&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T11:45:41.710Z",
  "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": "NCT05867381",
      "title": "Using Indoor Air Filtration to Slow Atherothrombosis Progression in Adults With Ischemic Heart Disease History",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Air Pollution",
        "Atherosclerosis"
      ],
      "interventions": [
        {
          "name": "HEPA filtration",
          "type": "DEVICE"
        },
        {
          "name": "Sham filtration",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "84 Years",
        "sex": "ALL",
        "summary": "65 Years to 84 Years"
      },
      "enrollment_count": 112,
      "start_date": "2023-07-11",
      "completion_date": "2028-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-08",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05867381"
    },
    {
      "nct_id": "NCT05994937",
      "title": "Cleaner Air for Lower Cardiometabolic Risk",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PreDiabetes"
      ],
      "interventions": [
        {
          "name": "PAC with HEPA filter intact",
          "type": "DEVICE"
        },
        {
          "name": "PAC with HEPA filter removed",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 150,
      "start_date": "2023-12-26",
      "completion_date": "2026-04-22",
      "has_results": false,
      "last_update_posted_date": "2026-05-12",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05994937"
    },
    {
      "nct_id": "NCT07047430",
      "title": "The Airports, Air Quality, and Asthma (AAA) Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pediatric Asthma"
      ],
      "interventions": [
        {
          "name": "Portable air cleaner with HEPA filter",
          "type": "DEVICE"
        },
        {
          "name": "Less effective portable air cleaner (no HEPA)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Years to 12 Years"
      },
      "enrollment_count": 60,
      "start_date": "2024-06-01",
      "completion_date": "2027-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-02",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07047430"
    },
    {
      "nct_id": "NCT05913765",
      "title": "Air Filtration for COPD in VA Population of Veterans",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "Air cleaner",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Illinois Institute of Technology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2023-01-11",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-10-23",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05913765"
    },
    {
      "nct_id": "NCT04279249",
      "title": "Home Air Filtration for Traffic-Related Air Pollution",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Risk Factor",
        "Blood Pressure"
      ],
      "interventions": [
        {
          "name": "HEPA Air Filtration",
          "type": "OTHER"
        },
        {
          "name": "Sham HEPA Air Filtration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "UConn Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 156,
      "start_date": "2020-11-15",
      "completion_date": "2024-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-11-01",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04279249"
    },
    {
      "nct_id": "NCT06534385",
      "title": "The Clean Air Study: HEPA Purifiers to Improve Indoor Air Quality and Health in Rural Alaska Homes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Air Pollution, Indoor"
      ],
      "interventions": [
        {
          "name": "Air purifier",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Alaska Native Tribal Health Consortium",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "5 Years",
        "sex": "ALL",
        "summary": "Up to 5 Years"
      },
      "enrollment_count": 15,
      "start_date": "2024-11-25",
      "completion_date": "2026-04-01",
      "has_results": false,
      "last_update_posted_date": "2025-02-27",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Bethel, Alaska",
      "locations": [
        {
          "city": "Bethel",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06534385"
    },
    {
      "nct_id": "NCT05379400",
      "title": "Cleaner Air for Better Cardiac Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Portable air cleaner (PAC)",
          "type": "OTHER"
        },
        {
          "name": "Sham Portable air cleaner (PAC)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 48,
      "start_date": "2022-08-11",
      "completion_date": "2023-08-24",
      "has_results": true,
      "last_update_posted_date": "2024-12-06",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05379400"
    },
    {
      "nct_id": "NCT05454930",
      "title": "Effect of Commute Traffic on Vascular Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Filtered Air",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 16,
      "start_date": "2015-01",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2022-07-12",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05454930"
    },
    {
      "nct_id": "NCT05615870",
      "title": "Bronchiolitis Recovery and the Use of High Efficiency Particulate Air (HEPA) Filters",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bronchiolitis"
      ],
      "interventions": [
        {
          "name": "Winix 5500-2 HEPA filtration units",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "IDeA States Pediatric Clinical Trials Network",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Week",
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "1 Week to 12 Months"
      },
      "enrollment_count": 230,
      "start_date": "2022-11-07",
      "completion_date": "2024-07-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-02",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 17,
      "location_summary": "Anchorage, Alaska • Little Rock, Arkansas • Honolulu, Hawaii + 14 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05615870"
    },
    {
      "nct_id": "NCT03187704",
      "title": "Boston Puerto Rican Health Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Air Pollution",
        "Cardiovascular Health"
      ],
      "interventions": [
        {
          "name": "HEPA air filtration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tufts University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "45 Years to 80 Years"
      },
      "enrollment_count": 23,
      "start_date": "2012-05-01",
      "completion_date": "2014-12-31",
      "has_results": false,
      "last_update_posted_date": "2017-06-20",
      "last_synced_at": "2026-09-06T11:45:41.710Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03187704"
    }
  ]
}