{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Venipuncture&page=21",
    "query": {
      "intervention": "Venipuncture",
      "page": 21
    },
    "page_size": 10
  },
  "pagination": {
    "page": 21,
    "page_size": 10,
    "total_count": 1532,
    "total_pages": 154,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Venipuncture&page=22&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Venipuncture&page=20&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-23T07:08:53.123Z",
  "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": "NCT04796584",
      "title": "Efficacy of COVID-19 Vaccination in Patients With Multiple Sclerosis Treated With Immune Modulating Medication",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Analysis of cell-mediated and antibody-mediated immunity to SARS-CoV-2 virus",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Providence Health & Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-07-11",
      "completion_date": "2022-10-25",
      "has_results": false,
      "last_update_posted_date": "2023-04-03",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04796584"
    },
    {
      "nct_id": "NCT02670343",
      "title": "Phlebotomy Study of Testosterone Undecanoate",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Hypogonadism"
      ],
      "interventions": [
        {
          "name": "Oral Testosterone Undecanoate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Clarus Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 8,
      "start_date": "2016-01",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2018-03-09",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Torrance, California",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02670343"
    },
    {
      "nct_id": "NCT01337999",
      "title": "Human Epididymis Protein 4 in Normal Menstruating Women",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Premenopausal Women"
      ],
      "interventions": [
        {
          "name": "blood draws",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Women and Infants Hospital of Rhode Island",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2011-03",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-12-17",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01337999"
    },
    {
      "nct_id": "NCT02059421",
      "title": "Johrei Therapy and CBT-I in Facilitating Sleep in ICU Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disturbances in Survivors of Critical Illness"
      ],
      "interventions": [
        {
          "name": "Cognitive Behavioral Therapy for Insomnia (CBT-I)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Johrei therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Arizona",
      "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": 50,
      "start_date": "2014-01",
      "completion_date": "2023-06",
      "has_results": false,
      "last_update_posted_date": "2025-04-16",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02059421"
    },
    {
      "nct_id": "NCT03721367",
      "title": "Chronic Liver Disease in Urea Cycle Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Urea Cycle Disorder"
      ],
      "interventions": [
        {
          "name": "Diagnostic Ultrasound",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "5 Years to 60 Years"
      },
      "enrollment_count": 28,
      "start_date": "2017-11-29",
      "completion_date": "2020-06-01",
      "has_results": true,
      "last_update_posted_date": "2023-02-10",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03721367"
    },
    {
      "nct_id": "NCT01475149",
      "title": "Effect of HCQ on AnxA5 Resistance Assay in Antiphospholipid (aPL) Positive Patients With and Without Systemic Lupus Erythematosus (SLE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Antiphospholipid Syndrome",
        "Thrombophilia Due to Antiphospholipid Antibody",
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Phlebotomy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 33,
      "start_date": "2010-09",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2017-03-27",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01475149"
    },
    {
      "nct_id": "NCT04975347",
      "title": "Opioid Antagonism in Individuals Ascertained Through the Partners HealthCare Biobank",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Reproductive Disorders"
      ],
      "interventions": [
        {
          "name": "Naloxone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stephanie B. Seminara, MD",
      "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": 47,
      "start_date": "2022-06-03",
      "completion_date": "2025-08-08",
      "has_results": false,
      "last_update_posted_date": "2026-02-18",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04975347"
    },
    {
      "nct_id": "NCT02596347",
      "title": "The Role of JAK2 in Alveolar Macrophages (AM's) in Chronic Beryllium Disease (CBD)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Beryllium Disease (CBD)",
        "Beryllium Sensitization (BeS)"
      ],
      "interventions": [
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "bronchoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "National Jewish Health",
      "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": 3,
      "start_date": "2015-04",
      "completion_date": "2019-12-06",
      "has_results": false,
      "last_update_posted_date": "2020-10-19",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02596347"
    },
    {
      "nct_id": "NCT04708613",
      "title": "University of Pittsburgh Brain Health Initiative",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Cognitive/Neuropsychological Testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Vestibular/Ocular-Motor Testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sleep Evaluation",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MRI, High-Resolution",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Health & Physical Exam",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Physical Function",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood Testing and Biomarker Analysis",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Applanation Tonometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "PET brain imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "[C-11]6-OH-BTA-1",
          "type": "DRUG"
        },
        {
          "name": "[F-18]AV-1451",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "DRUG"
      ],
      "sponsor": "David Okonkwo, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "29 Years",
        "maximum_age": "59 Years",
        "sex": "MALE",
        "summary": "29 Years to 59 Years · Male only"
      },
      "enrollment_count": 300,
      "start_date": "2019-11-18",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-22",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04708613"
    },
    {
      "nct_id": "NCT00839709",
      "title": "Peripheral Immunologic Response of Solid Organ Transplant Recipients to Depletion Versus Non-depletion Protocols",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Liver Disease",
        "Liver Transplantation"
      ],
      "interventions": [
        {
          "name": "blood sampling",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 30,
      "start_date": "2009-03",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2011-03-03",
      "last_synced_at": "2026-10-23T07:08:53.123Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00839709"
    }
  ]
}