{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=blood+draws&page=4",
    "query": {
      "intervention": "blood draws",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 838,
    "total_pages": 84,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=blood+draws&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=blood+draws&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-03T02:12:07.470Z",
  "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": "NCT00676364",
      "title": "Randomized Control Trial of a Topical Anesthetic to Evaluate Pain and Anxiety During Venipuncture",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain",
        "Anxiety"
      ],
      "interventions": [
        {
          "name": "4% lidocaine topical anesthetic cream",
          "type": "DRUG"
        },
        {
          "name": "Placebo cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jenny Boucher, PharmD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "5 Years to 18 Years"
      },
      "enrollment_count": 114,
      "start_date": "2003-03",
      "completion_date": "2008-02",
      "has_results": true,
      "last_update_posted_date": "2012-09-25",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Allentown, Pennsylvania",
      "locations": [
        {
          "city": "Allentown",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00676364"
    },
    {
      "nct_id": "NCT02895087",
      "title": "Study to Explore Natural Daily Variation and Impact of Stress in HIV Levels",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV"
      ],
      "interventions": [
        {
          "name": "Diurnal Variation Group",
          "type": "OTHER"
        },
        {
          "name": "External Stress Group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Melbourne",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "25 Years to 55 Years · Male only"
      },
      "enrollment_count": 40,
      "start_date": "2015-03",
      "completion_date": "2018-01",
      "has_results": false,
      "last_update_posted_date": "2021-11-04",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 2,
      "location_summary": "San Francisco, California • Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02895087"
    },
    {
      "nct_id": "NCT01286883",
      "title": "Cancer Stem Cell Markers and Prognostic Markers in Circulating Tumor Cells",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Milton S. Hershey Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2011-02",
      "completion_date": "2014-09",
      "has_results": false,
      "last_update_posted_date": "2018-08-20",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01286883"
    },
    {
      "nct_id": "NCT05200845",
      "title": "The Role of Altered Nutrient Partitioning in Food Reward",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight and Obesity"
      ],
      "interventions": [
        {
          "name": "Conditioned Stimulus + (CS+): Flavored beverage solution with 75 calories of sucrose",
          "type": "OTHER"
        },
        {
          "name": "Conditioned Stimulus - (CS-): Flavored beverage solution with sweetness-matched sucralose",
          "type": "OTHER"
        },
        {
          "name": "High-Fat Test Meal Inside a Metabolic Chamber",
          "type": "OTHER"
        },
        {
          "name": "High-Carbohydrate Test Meal Inside a Metabolic Chamber",
          "type": "OTHER"
        },
        {
          "name": "fMRI Scan",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Polytechnic Institute and State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-02-23",
      "completion_date": "2023-06-01",
      "has_results": true,
      "last_update_posted_date": "2025-09-08",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05200845"
    },
    {
      "nct_id": "NCT00450827",
      "title": "Iodine I 131 Monoclonal Antibody 3F8 and Bevacizumab in Treating Patients With Relapsed or Refractory Neuroblastoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Neuroblastoma"
      ],
      "interventions": [
        {
          "name": "bevacizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "autologous hematopoietic stem cell transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "iodine I 131 monoclonal antibody 3F8",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Year and older"
      },
      "enrollment_count": 25,
      "start_date": "2006-08",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2015-09-28",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00450827"
    },
    {
      "nct_id": "NCT03395756",
      "title": "Depot Medroxyprogesterone Acetate as Emergency Contraception",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Emergency Contraception",
        "Contraception"
      ],
      "interventions": [
        {
          "name": "Depot-Medroxyprogestereone Acetate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 39 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2018-08-31",
      "completion_date": "2020-10-30",
      "has_results": false,
      "last_update_posted_date": "2020-11-05",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03395756"
    },
    {
      "nct_id": "NCT06671756",
      "title": "Metabolic Effects of Fructose Intake",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Fructose Ingestion",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Glucose Ingestion",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 8,
      "start_date": "2024-12-02",
      "completion_date": "2025-05-31",
      "has_results": false,
      "last_update_posted_date": "2025-07-24",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06671756"
    },
    {
      "nct_id": "NCT01783288",
      "title": "Aldosterone & Sodium Regulation in Postural Tachycardia Syndrome - Screening",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postural Tachycardia Syndrome"
      ],
      "interventions": [
        {
          "name": "Autonomic Function Testing",
          "type": "OTHER"
        },
        {
          "name": "Posture Study",
          "type": "OTHER"
        },
        {
          "name": "Measurement of Total Blood Volume",
          "type": "PROCEDURE"
        },
        {
          "name": "Exercise Capacity Test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 110,
      "start_date": "2013-02",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-13",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01783288"
    },
    {
      "nct_id": "NCT03533777",
      "title": "Antegrade Versus Retrograde IV for Blood Draws",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "There is no Focus on Any Specific Condition"
      ],
      "interventions": [
        {
          "name": "Peripheral intravenous catheter placement",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw",
          "type": "OTHER"
        },
        {
          "name": "Peripheral intravenous catheter",
          "type": "DEVICE"
        },
        {
          "name": "To keep open (TKO) infusion of 0.9% normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "University of Iowa",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 230,
      "start_date": "2018-06-22",
      "completion_date": "2019-06-19",
      "has_results": false,
      "last_update_posted_date": "2019-07-01",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03533777"
    },
    {
      "nct_id": "NCT03858777",
      "title": "Cell Free DNA in Cardiac Sarcoidosis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sarcoidosis With Myocarditis",
        "Sarcoidosis",
        "Healthy",
        "ST Elevation Myocardial Infarction"
      ],
      "interventions": [
        {
          "name": "cell free DNA",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Nabeel Hamzeh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2019-05-01",
      "completion_date": "2028-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-01-09",
      "last_synced_at": "2026-10-03T02:12:07.470Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03858777"
    }
  ]
}