{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Carbon+Black",
    "query": {
      "intervention": "Carbon Black"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T16:16:03.685Z",
  "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": "NCT01257191",
      "title": "A Study to Compare the Effects of Different Sized Particles on Cells in the Nose",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypersensitivity, Immediate",
        "Atopic Hypersensitivity"
      ],
      "interventions": [
        {
          "name": "Carbon Black",
          "type": "DRUG"
        },
        {
          "name": "Diesel Exhaust Particles",
          "type": "DRUG"
        },
        {
          "name": "Fine Concentrated Ambient Particles",
          "type": "DRUG"
        },
        {
          "name": "Ultrafine Concentrated Ambient Particles",
          "type": "DRUG"
        },
        {
          "name": "Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2010-04",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2017-01-11",
      "last_synced_at": "2026-09-10T16:16:03.685Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01257191"
    },
    {
      "nct_id": "NCT06678178",
      "title": "Climate Impact Label Design and Fast-Food Meal Selection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Selection"
      ],
      "interventions": [
        {
          "name": "Control (QR) Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Warning High Climate Impact Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Traffic Light Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Climate Grade Labels",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Numeric Carbon Footprint Labels",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins Bloomberg School of Public Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6622,
      "start_date": "2024-12-02",
      "completion_date": "2024-12-06",
      "has_results": true,
      "last_update_posted_date": "2026-01-06",
      "last_synced_at": "2026-09-10T16:16:03.685Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06678178"
    },
    {
      "nct_id": "NCT06150989",
      "title": "Black Women's Life Experience On Cardiovascular Health Via Ongoing Monitoring",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiovascular Diseases",
        "Heart Disease Risk Factors"
      ],
      "interventions": [
        {
          "name": "Observational Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "The University of Texas at Arlington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 80,
      "start_date": "2024-03-04",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-09-10T16:16:03.685Z",
      "location_count": 1,
      "location_summary": "Arlington, Texas",
      "locations": [
        {
          "city": "Arlington",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06150989"
    },
    {
      "nct_id": "NCT01655810",
      "title": "Vitamin D, Cardiovascular Disease, and African Americans",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency",
        "Type 2 Diabetes Mellitus",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Calcium carbonate",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "50 Years to 70 Years"
      },
      "enrollment_count": 86,
      "start_date": "2012-08-13",
      "completion_date": "2018-02-09",
      "has_results": false,
      "last_update_posted_date": "2020-06-05",
      "last_synced_at": "2026-09-10T16:16:03.685Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01655810"
    },
    {
      "nct_id": "NCT03476837",
      "title": "Reducing Tobacco Exposures Among African American Women and Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Use",
        "Second Hand Tobacco Smoke"
      ],
      "interventions": [
        {
          "name": "Treatment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Arkansas",
      "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": 200,
      "start_date": "2020-01-15",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-08",
      "last_synced_at": "2026-09-10T16:16:03.685Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03476837"
    }
  ]
}