{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample+drawn+from+a+vein",
    "query": {
      "intervention": "Blood sample drawn from a vein"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 47,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample+drawn+from+a+vein&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T05:29:00.108Z",
  "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": "NCT05676450",
      "title": "Feasibility and Clinical Utility of Cell-free DNA (cfDNA) in Identifying Actionable Alterations and Minimal Residual Disease for Lymphoma Patients Across Community Centers in Texas",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lymphoma"
      ],
      "interventions": [
        {
          "name": "cell-free DNA",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 517,
      "start_date": "2023-02-23",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-20",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 2,
      "location_summary": "Houston, Texas • San Antonio, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05676450"
    },
    {
      "nct_id": "NCT01349218",
      "title": "Relationship Between Potassium Level in Venous Blood Samples Drawn and Heel Sticks In Infants and Newborns",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "Blood sample drawn from a vein",
          "type": "OTHER"
        },
        {
          "name": "Blood sample drawn from a heel stick",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "6 Months",
        "sex": "ALL",
        "summary": "Up to 6 Months"
      },
      "enrollment_count": 31,
      "start_date": "2014-03",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2016-05-13",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01349218"
    },
    {
      "nct_id": "NCT00729716",
      "title": "Comparison of BioCart™II With Microfracture for Treatment of Cartilage Defects of the Femoral Condyle",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Symptomatic Cartilage Defects of the Femoral Condyle"
      ],
      "interventions": [
        {
          "name": "BioCart™II",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Microfracture",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "ProChon Biotech Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "16 Years to 60 Years"
      },
      "enrollment_count": 40,
      "start_date": "2008-05",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2012-04-17",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 5,
      "location_summary": "Tucson, Arizona • Savannah, Georgia • Baltimore, Maryland + 2 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Savannah",
          "state": "Georgia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Altoona",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00729716"
    },
    {
      "nct_id": "NCT04923685",
      "title": "MicroRNA Correlates of Childhood Maltreatment and Suicidality",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Major Depressive Disorder",
        "Suicidal Ideation"
      ],
      "interventions": [
        {
          "name": "Trier Social Stress Test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "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": 450,
      "start_date": "2021-02-26",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-30",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04923685"
    },
    {
      "nct_id": "NCT02316314",
      "title": "Characterization of the Cardiac Phenotype of Friedreich's Ataxia (FRDA)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Friedreich's Ataxia"
      ],
      "interventions": [
        {
          "name": "Cardiac magnetic resonance imaging (CMR)",
          "type": "PROCEDURE"
        },
        {
          "name": "Exercise-stress test",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiogram (ECHO)",
          "type": "PROCEDURE"
        },
        {
          "name": "Cardiac-related blood studies",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "12 Years to 50 Years"
      },
      "enrollment_count": 100,
      "start_date": "2015-01-15",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-07-29",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02316314"
    },
    {
      "nct_id": "NCT02398383",
      "title": "Role of Glucagon In Glucose Control in Cystic Fibrosis Related Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cystic Fibrosis",
        "Cystic Fibrosis Related Diabetes"
      ],
      "interventions": [
        {
          "name": "Oral Glucose Tolerance Test",
          "type": "OTHER"
        },
        {
          "name": "Mixed Meal Tolerance Test",
          "type": "OTHER"
        },
        {
          "name": "Hypoglycemic Clamp",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "12 Years to 45 Years"
      },
      "enrollment_count": 7,
      "start_date": "2015-03",
      "completion_date": "2017-06-22",
      "has_results": false,
      "last_update_posted_date": "2020-06-26",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02398383"
    },
    {
      "nct_id": "NCT06597149",
      "title": "Effect of Transcutaneous Auricular Vagus Nerve Stimulation (taVNS) on Plasma Insulin Levels",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Transcutaneous Auricular Vagus Nerve Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 30,
      "start_date": "2025-04-16",
      "completion_date": "2028-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06597149"
    },
    {
      "nct_id": "NCT00783952",
      "title": "Validation of Mixed Venous Blood Oxygen Saturation Obtained With a Novel Mathematical Equation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mixed Venous Oxygen Saturation",
        "Tissue Oxygenation"
      ],
      "interventions": [
        {
          "name": "Cerebral/Somatic Tissue Oximeter device",
          "type": "DEVICE"
        },
        {
          "name": "Pulmonary artery catheter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 8,
      "start_date": "2008-11",
      "completion_date": "2013-01",
      "has_results": true,
      "last_update_posted_date": "2017-04-20",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00783952"
    },
    {
      "nct_id": "NCT00409825",
      "title": "Study of Pharmacology of 17-OHPC in Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "17-OHPC",
          "type": "DRUG"
        },
        {
          "name": "Blood Draws",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 61,
      "start_date": "2006-03",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2015-02-27",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 4,
      "location_summary": "Washington D.C., District of Columbia • Pittsburgh, Pennsylvania • Galveston, Texas + 1 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Galveston",
          "state": "Texas"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00409825"
    },
    {
      "nct_id": "NCT01851642",
      "title": "Lung Disease and Its Affect on the Work of White Blood Cells in the Lungs",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alpha-1 Antitrypsin Deficiency",
        "AAT Deficiency",
        "AATD",
        "Cystic Fibrosis (CF)"
      ],
      "interventions": [
        {
          "name": "History and physical exam.",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw.",
          "type": "PROCEDURE"
        },
        {
          "name": "Pulmonary function testing.",
          "type": "PROCEDURE"
        },
        {
          "name": "Albuterol inhaler.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 220,
      "start_date": "2007-08-09",
      "completion_date": "2033-07-20",
      "has_results": false,
      "last_update_posted_date": "2025-11-06",
      "last_synced_at": "2026-09-25T05:29:00.108Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01851642"
    }
  ]
}