{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=8",
    "query": {
      "intervention": "Blood samples collected",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 4247,
    "total_pages": 425,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T23:01:16.705Z",
  "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": "NCT02275533",
      "title": "Testing Nivolumab to Prevent Disease From Coming Back After Treatment in Patients With Acute Myeloid Leukemia, REMAIN Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acute Myeloid Leukemia"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Clinical Observation",
          "type": "OTHER"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 82,
      "start_date": "2015-07-02",
      "completion_date": "2026-10-08",
      "has_results": true,
      "last_update_posted_date": "2026-05-28",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 45,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Duarte, California + 34 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02275533"
    },
    {
      "nct_id": "NCT01973140",
      "title": "Effects of Tolvaptan in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Tolvaptan",
          "type": "DRUG"
        },
        {
          "name": "Hypertonic saline infusion",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "21 Years to 55 Years · Male only"
      },
      "enrollment_count": 17,
      "start_date": "2013-11",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2016-09-28",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01973140"
    },
    {
      "nct_id": "NCT04327804",
      "title": "A Longitudinal Study of COVID-19 Positive Patients Testing Nasal Swabs and Collecting Blood Samples for Research",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV Infection"
      ],
      "interventions": [
        {
          "name": "Odd/Even birth year intervention groups",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "UnitedHealth Group",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 139,
      "start_date": "2020-03-25",
      "completion_date": "2020-10-10",
      "has_results": false,
      "last_update_posted_date": "2022-04-11",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04327804"
    },
    {
      "nct_id": "NCT07293247",
      "title": "A Study of Targeted Post-Surgery Radiation Therapy for Non-Small Cell Lung Cancer With Remaining Lymph Node Cancer After Treatment",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Lung Non-Small Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Chemotherapy",
          "type": "DRUG"
        },
        {
          "name": "Immunotherapy",
          "type": "OTHER"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Fludeoxyglucose F-18",
          "type": "OTHER"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 164,
      "start_date": "2026-10-14",
      "completion_date": "2032-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-10-02",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 111,
      "location_summary": "Jonesboro, Arkansas • Los Angeles, California • Parker, Colorado + 83 more",
      "locations": [
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Parker",
          "state": "Colorado"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07293247"
    },
    {
      "nct_id": "NCT01800526",
      "title": "A Pilot Study of N-acetylcysteine in Patients With Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "Sickle Cell Anemia"
      ],
      "interventions": [
        {
          "name": "N-Acetylcysteine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bloodworks",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2013-03",
      "completion_date": "2020-06-30",
      "has_results": false,
      "last_update_posted_date": "2020-07-09",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01800526"
    },
    {
      "nct_id": "NCT03057626",
      "title": "Late Effects After Treatment in Patients With Previously Diagnosed High-Risk Neuroblastoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Recurrent Neuroblastoma",
        "Stage 2A Neuroblastoma",
        "Stage 2B Neuroblastoma",
        "Stage 3 Neuroblastoma",
        "Stage 4 Neuroblastoma",
        "Stage 4S Neuroblastoma"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "5 Years to 50 Years"
      },
      "enrollment_count": 376,
      "start_date": "2017-06-05",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-01-09",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 84,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 70 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Downey",
          "state": "California"
        },
        {
          "city": "Duarte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03057626"
    },
    {
      "nct_id": "NCT04791215",
      "title": "Circulating Tumor DNA Alterations in Non-small Cell Lung Cancer Patients Treated With Pembrolizumab",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Non Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Observational",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2020-02-01",
      "completion_date": "2023-04-12",
      "has_results": false,
      "last_update_posted_date": "2024-10-26",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04791215"
    },
    {
      "nct_id": "NCT00510315",
      "title": "Abdominal Obesity and Cardiovascular Risk Factors in Women Who Survived Cancer or a Related Illness Following Total Body Irradiation and Stem Cell Transplant",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leukemia",
        "Hodgkin's Lymphoma",
        "Non-Hodgkin's Lymphoma",
        "Myelodysplastic Syndrome"
      ],
      "interventions": [
        {
          "name": "Questionnaires, Laboratory tests, Abdominal MRI",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 11,
      "start_date": "2007-07",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2020-12-07",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00510315"
    },
    {
      "nct_id": "NCT07511504",
      "title": "Y-90 Radioembolization, Durvalumab, Tremelimumab, and Zanzalintinib for the Treatment of Unresectable and Locally-Advanced Hepatocellular Carcinoma",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Locally Advanced Hepatocellular Carcinoma",
        "Stage III Hepatocellular Carcinoma AJCC v8",
        "Stage IV Hepatocellular Carcinoma AJCC v8",
        "Unresectable Hepatocellular Carcinoma"
      ],
      "interventions": [
        {
          "name": "Angiogram",
          "type": "PROCEDURE"
        },
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Durvalumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Single Photon Emission Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Tremelimumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Yttrium-90 Microsphere Radioembolization",
          "type": "PROCEDURE"
        },
        {
          "name": "Zanzalintinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "OHSU Knight Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2026-04-02",
      "completion_date": "2027-08-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-06",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07511504"
    },
    {
      "nct_id": "NCT05382338",
      "title": "A Study of Treatment for Medulloblastoma Using Sodium Thiosulfate to Reduce Hearing Loss",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Childhood Medulloblastoma"
      ],
      "interventions": [
        {
          "name": "Audiometric Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Auditory Brainstem Response",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Cisplatin",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Lomustine",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Sodium Thiosulfate",
          "type": "DRUG"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        },
        {
          "name": "Vincristine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "4 Years to 21 Years"
      },
      "enrollment_count": 225,
      "start_date": "2023-02-20",
      "completion_date": "2029-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-25",
      "last_synced_at": "2026-10-06T23:01:16.705Z",
      "location_count": 106,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 92 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05382338"
    }
  ]
}