{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=biospecimen+Collection&page=46",
    "query": {
      "intervention": "biospecimen Collection",
      "page": 46
    },
    "page_size": 10
  },
  "pagination": {
    "page": 46,
    "page_size": 10,
    "total_count": 3530,
    "total_pages": 353,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=biospecimen+Collection&page=47&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=biospecimen+Collection&page=45&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-11-13T01:10:48.166Z",
  "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": "NCT00723762",
      "title": "Valproic Acid-associated Hypoalbuminemia in Medically Fragile Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypoalbuminemia"
      ],
      "interventions": [
        {
          "name": "Specimen collection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Akron Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 90,
      "start_date": "2009-02",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2011-03-10",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "Mantua, Ohio",
      "locations": [
        {
          "city": "Mantua",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00723762"
    },
    {
      "nct_id": "NCT00897403",
      "title": "Blood and Tissue Sample Collection for Future Colon Cancer Biomarker Studies in Patients Undergoing Colonoscopy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Colorectal Cancer",
        "Health Status Unknown"
      ],
      "interventions": [
        {
          "name": "biologic sample preservation procedure",
          "type": "OTHER"
        },
        {
          "name": "diagnostic colonoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "25 Years to 75 Years"
      },
      "enrollment_count": 6446,
      "start_date": "2006-12",
      "completion_date": "2016-04",
      "has_results": false,
      "last_update_posted_date": "2017-04-07",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 4,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00897403"
    },
    {
      "nct_id": "NCT04212351",
      "title": "Frameshift Peptides of Children With NF1",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neurofibromatosis Type 1"
      ],
      "interventions": [
        {
          "name": "Frameshift Array blood sample test",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "1 Day to 30 Years"
      },
      "enrollment_count": 60,
      "start_date": "2019-04-11",
      "completion_date": "2022-04-27",
      "has_results": false,
      "last_update_posted_date": "2022-08-31",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 3,
      "location_summary": "Washington D.C., District of Columbia • Atlanta, Georgia • Dallas, Texas",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04212351"
    },
    {
      "nct_id": "NCT00590941",
      "title": "Genetic Determinations for Side Effects and Response Rate for Patients Receiving Chemotherapy With Diffuse Large Cell Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lymphoma",
        "Diffuse Large Cell"
      ],
      "interventions": [
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 52,
      "start_date": "2005-02",
      "completion_date": "2011-04",
      "has_results": false,
      "last_update_posted_date": "2013-05-16",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00590941"
    },
    {
      "nct_id": "NCT03802994",
      "title": "Pneumococcal Conjugate Vaccine in Aging Renal Transplant",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Renal Transplantation",
        "Aging"
      ],
      "interventions": [
        {
          "name": "23 valent pneumococcal polysaccharide vaccine",
          "type": "DRUG"
        },
        {
          "name": "13 valent conjugated pneumococcal vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Peripheral blood sample",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "35 Years to 75 Years"
      },
      "enrollment_count": 57,
      "start_date": "2018-11-01",
      "completion_date": "2020-02-28",
      "has_results": true,
      "last_update_posted_date": "2021-04-30",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 2,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03802994"
    },
    {
      "nct_id": "NCT00843453",
      "title": "Long-term Use of Proton Pump Inhibitors May Cause Vitamin B12 Deficiency in the Institutionalized Elderly",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin B12 Deficiency"
      ],
      "interventions": [
        {
          "name": "blood collection",
          "type": "OTHER"
        },
        {
          "name": "treatment (cyanocobalamin nasal spray)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University of Delaware",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "60 Years to 89 Years"
      },
      "enrollment_count": 36,
      "start_date": "2006-11",
      "completion_date": "2008-04",
      "has_results": false,
      "last_update_posted_date": "2009-07-23",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 2,
      "location_summary": "Manchester, Maryland • Timonium, Maryland",
      "locations": [
        {
          "city": "Manchester",
          "state": "Maryland"
        },
        {
          "city": "Timonium",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00843453"
    },
    {
      "nct_id": "NCT04766788",
      "title": "Studying Students at Risk for COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Wearable devices, saliva samples, survey measures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2381,
      "start_date": "2020-09-03",
      "completion_date": "2023-04-18",
      "has_results": false,
      "last_update_posted_date": "2023-12-29",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04766788"
    },
    {
      "nct_id": "NCT04892277",
      "title": "CD19-Directed CAR-T Cell Therapy for the Treatment of Relapsed/Refractory B Cell Malignancies",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Recurrent B-Cell Non-Hodgkin Lymphoma",
        "Recurrent Chronic Lymphocytic Leukemia",
        "Recurrent Small Lymphocytic Lymphoma",
        "Recurrent Transformed Chronic Lymphocytic Leukemia",
        "Refractory B-Cell Non-Hodgkin Lymphoma",
        "Refractory Chronic Lymphocytic Leukemia",
        "Refractory Small Lymphocytic Lymphoma",
        "Refractory Transformed Chronic Lymphocytic Leukemia"
      ],
      "interventions": [
        {
          "name": "Autologous Anti-CD19 CAR-expressing T-lymphocytes IC19/1563",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Bendamustine",
          "type": "DRUG"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2022-10-03",
      "completion_date": "2040-03-27",
      "has_results": false,
      "last_update_posted_date": "2026-06-09",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04892277"
    },
    {
      "nct_id": "NCT01521039",
      "title": "Assessment of MicroRNA Expression in Acute Graft-versus-Host Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Acute Graft-versus-Host Disease",
        "Allogeneic Stem Cell Transplant"
      ],
      "interventions": [
        {
          "name": "Blood samples",
          "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": 259,
      "start_date": "2012-02-20",
      "completion_date": "2024-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-01-20",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01521039"
    },
    {
      "nct_id": "NCT03980769",
      "title": "Donor Stem Cell Transplant With Treosulfan, Fludarabine, and Thiotepa in Treating Patients With Non-malignant Disorders",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Non-Neoplastic Hematopoietic and Lymphoid Cell Disorder"
      ],
      "interventions": [
        {
          "name": "Thiotepa",
          "type": "DRUG"
        },
        {
          "name": "Treosulfan",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine Phosphate",
          "type": "DRUG"
        },
        {
          "name": "Rabbit Anti-Thymocyte Globulin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Allogeneic Hematopoietic Stem Cell Transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Marrow Aspiration",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Fred Hutchinson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "Up to 50 Years"
      },
      "enrollment_count": 40,
      "start_date": "2021-05-05",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-16",
      "last_synced_at": "2026-11-13T01:10:48.166Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03980769"
    }
  ]
}