{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biospecimen+Collection&page=36",
    "query": {
      "intervention": "Biospecimen Collection",
      "page": 36
    },
    "page_size": 10
  },
  "pagination": {
    "page": 36,
    "page_size": 10,
    "total_count": 3512,
    "total_pages": 352,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biospecimen+Collection&page=37&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Biospecimen+Collection&page=35&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-18T15:58:44.073Z",
  "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": "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": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03533777"
    },
    {
      "nct_id": "NCT04095364",
      "title": "Letrozole With or Without Paclitaxel and Carboplatin in Treating Patients With Stage II-IV Ovarian, Fallopian Tube, or Primary Peritoneal Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Low Grade Fallopian Tube Serous Adenocarcinoma",
        "Ovarian Low Grade Serous Adenocarcinoma",
        "Primary Peritoneal Low Grade Serous Adenocarcinoma",
        "Stage II Fallopian Tube Cancer AJCC v8",
        "Stage II Ovarian Cancer AJCC v8",
        "Stage II Primary Peritoneal Cancer AJCC v8",
        "Stage III Fallopian Tube Cancer AJCC v8",
        "Stage III Ovarian Cancer AJCC v8",
        "Stage III Primary Peritoneal Cancer AJCC v8",
        "Stage IV Fallopian Tube Cancer AJCC v8",
        "Stage IV Ovarian Cancer AJCC v8",
        "Stage IV Primary Peritoneal Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Imaging Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "NRG Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 450,
      "start_date": "2019-09-20",
      "completion_date": "2028-02-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-24",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 883,
      "location_summary": "Anchorage, Alaska • Fairbanks, Alaska • Goodyear, Arizona + 562 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04095364"
    },
    {
      "nct_id": "NCT06864819",
      "title": "Role of Phosphatidylethanol in Predicting Perioperative Outcomes of Admitted Patients at UHCMC",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Postoperative Complications",
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Blood Draw",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "21 Years to 79 Years"
      },
      "enrollment_count": 170,
      "start_date": "2025-05-05",
      "completion_date": "2026-11-15",
      "has_results": false,
      "last_update_posted_date": "2026-09-04",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06864819"
    },
    {
      "nct_id": "NCT04720430",
      "title": "Blood Sample Collection for Experimental Blood Test to Track Liver Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hepatocellular Carcinoma"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2019-12-03",
      "completion_date": "2023-11-09",
      "has_results": false,
      "last_update_posted_date": "2025-04-29",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04720430"
    },
    {
      "nct_id": "NCT03688906",
      "title": "AI-EMERGE: Development and Validation of a Multi-analyte, Blood-based Colorectal Cancer Screening Test",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colo-rectal Cancer",
        "Cancer Colon",
        "Cancer, Rectum",
        "Neoplasms,Colorectal",
        "Polyps",
        "Polyp of Colon",
        "Adenoma",
        "Adenoma Colon"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Freenome Holdings Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3275,
      "start_date": "2018-01-12",
      "completion_date": "2019-11-25",
      "has_results": false,
      "last_update_posted_date": "2022-03-02",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 29,
      "location_summary": "Huntsville, Alabama • Chandler, Arizona • Tucson, Arizona + 25 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03688906"
    },
    {
      "nct_id": "NCT01064921",
      "title": "Ph I Vorinostat in the Treatment of Advanced Staged Oropharyngeal Squamous Cell Carcinoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Stage III Squamous Cell Carcinoma of the Oropharynx",
        "Stage IV Squamous Cell Carcinoma of the Oropharynx"
      ],
      "interventions": [
        {
          "name": "vorinostat",
          "type": "DRUG"
        },
        {
          "name": "cisplatin",
          "type": "DRUG"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "Correlative Studies",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Ohio State University Comprehensive 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": 27,
      "start_date": "2010-01-19",
      "completion_date": "2017-11-08",
      "has_results": false,
      "last_update_posted_date": "2019-06-04",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01064921"
    },
    {
      "nct_id": "NCT04424004",
      "title": "MURDOCK Cabarrus County COVID-19 Prevalence and Immunity (C3PI) Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID 19"
      ],
      "interventions": [
        {
          "name": "COVID-19 PCR and serology testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2020-06-09",
      "completion_date": "2021-12-02",
      "has_results": false,
      "last_update_posted_date": "2022-02-04",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Kannapolis, North Carolina",
      "locations": [
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04424004"
    },
    {
      "nct_id": "NCT06668584",
      "title": "A Phase II Open-label Study of Olutasidenib Post-transplant Maintenance Therapy for Patients With IDH1-mutated Myeloid Malignancies",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Myeloid Malignancies"
      ],
      "interventions": [
        {
          "name": "Olutasidenib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 31,
      "start_date": "2024-12-31",
      "completion_date": "2029-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-05",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06668584"
    },
    {
      "nct_id": "NCT04431414",
      "title": "A Study of Immune Responses to the Virus That Causes COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2",
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Sample collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "COVID-19 Prevention Network",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 953,
      "start_date": "2020-07-20",
      "completion_date": "2022-06-02",
      "has_results": false,
      "last_update_posted_date": "2022-07-26",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 15,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Miami, Florida + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04431414"
    },
    {
      "nct_id": "NCT05717998",
      "title": "Imaging and Blood-Based Biomarkers for the Evaluation of Early Signs of Myocardial Injury After Thoracic Radiation Therapy",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Non-Small Cell Carcinoma",
        "GastroEsophageal Cancer",
        "Esophagus Cancer"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging of the Heart",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Ohio State University Comprehensive 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": 28,
      "start_date": "2021-04-02",
      "completion_date": "2027-04-18",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-18T15:58:44.073Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05717998"
    }
  ]
}