{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+Samples+for+Biomarkers&page=2",
    "query": {
      "intervention": "Blood Samples for Biomarkers",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 1291,
    "total_pages": 130,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+Samples+for+Biomarkers&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+Samples+for+Biomarkers&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T07:59:03.525Z",
  "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": "NCT02759887",
      "title": "Relationship Between Down Syndrome (DS) and Alzheimer's Disease (AD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Down Syndrome",
        "Alzheimer's Dementia"
      ],
      "interventions": [
        {
          "name": "biospecimen collection",
          "type": "PROCEDURE"
        },
        {
          "name": "cognitive assessments",
          "type": "OTHER"
        },
        {
          "name": "caregiver questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Florbetapir F18 imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "MRI",
          "type": "PROCEDURE"
        },
        {
          "name": "Fludeoxyglucose F18 (FDG)",
          "type": "PROCEDURE"
        },
        {
          "name": "Tau Pet",
          "type": "PROCEDURE"
        },
        {
          "name": "Actigraphy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "St. Joseph's Hospital and Medical Center, Phoenix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2016-11",
      "completion_date": "2018-12",
      "has_results": false,
      "last_update_posted_date": "2019-10-29",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02759887"
    },
    {
      "nct_id": "NCT03492801",
      "title": "Collection of Blood Samples in Patients With Non-small Cell Lung Cancer",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stage III Non-Small Cell Lung Cancer AJCC v7",
        "Stage IIIA Non-Small Cell Lung Cancer AJCC v7",
        "Stage IIIB Non-Small Cell Lung Cancer AJCC v7",
        "Stage IV Non-Small Cell Lung Cancer AJCC v7"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "University of Southern California",
      "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": "2017-12-11",
      "completion_date": "2023-11-21",
      "has_results": false,
      "last_update_posted_date": "2024-01-09",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03492801"
    },
    {
      "nct_id": "NCT01412437",
      "title": "Neuroimaging and Neurocognitive Assessment and Response to Sapropterin Dihydrochloride Treatment in Phenylketonuria",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PKU"
      ],
      "interventions": [
        {
          "name": "diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "sapropterin dihydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 0,
      "start_date": "2011-04",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2014-12-17",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01412437"
    },
    {
      "nct_id": "NCT03371992",
      "title": "Pilot Study of Nilogen 3D-EX and Its Ability to Predict Therapeutic Response to Anti-PD1 or Anti-PDL1 in NSCLC",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Non Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Nivolumab",
          "type": "DRUG"
        },
        {
          "name": "3D-EX",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Evaluation of Response by RECIST",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Nilogen Oncosystems",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2018-03-09",
      "completion_date": "2021-06",
      "has_results": false,
      "last_update_posted_date": "2020-03-27",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03371992"
    },
    {
      "nct_id": "NCT00985036",
      "title": "Vascular Endothelial Growth Factor (VEGF) Levels in Brain Tumor Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glioma",
        "Meningioma"
      ],
      "interventions": [
        {
          "name": "Blood test",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Marquette General Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 0,
      "start_date": "2009-09",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2012-04-24",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Marquette, Michigan",
      "locations": [
        {
          "city": "Marquette",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00985036"
    },
    {
      "nct_id": "NCT04666519",
      "title": "Zonulin Biomarker for Diagnosis of Hip and Knee Infections",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Surgical Site Infection",
        "Zonulin"
      ],
      "interventions": [
        {
          "name": "Zonulin Biomarker",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Rothman Institute Orthopaedics",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2020-11-15",
      "completion_date": "2021-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-12-14",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04666519"
    },
    {
      "nct_id": "NCT05074875",
      "title": "COVID-19 Respiratory Outcomes Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Questionnaires and Patient Reported Outcomes (PROs)",
          "type": "OTHER"
        },
        {
          "name": "Nasal Swab COVID-19 reverse transcription polymerase chain reaction test (RT-PCR)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood Samples for Biomarkers",
          "type": "GENETIC"
        },
        {
          "name": "High Resolution Computed Tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Physical Exam and Vital Signs",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Medical Research Council Sum Score",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Hand Grip Strength",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Spirometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Diffusing Capacity of Carbon Monoxide",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "6 Minute Walk Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sit to Stand (STS) Measurement",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST",
        "GENETIC"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 37,
      "start_date": "2021-01-15",
      "completion_date": "2023-05-09",
      "has_results": false,
      "last_update_posted_date": "2023-07-27",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 4,
      "location_summary": "St Louis, Missouri • New York, New York • Houston, Texas",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05074875"
    },
    {
      "nct_id": "NCT02446457",
      "title": "Rituximab and Pembrolizumab With or Without Lenalidomide in Treating Patients With Relapsed Follicular Lymphoma and Diffuse Large B-Cell Lymphoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Diffuse Large B-Cell Lymphoma",
        "Recurrent Grade 1 Follicular Lymphoma",
        "Recurrent Grade 2 Follicular Lymphoma",
        "Recurrent Grade 3a Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Rituximab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG",
        "BIOLOGICAL"
      ],
      "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": 53,
      "start_date": "2015-07-31",
      "completion_date": "2026-04-30",
      "has_results": true,
      "last_update_posted_date": "2026-03-09",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02446457"
    },
    {
      "nct_id": "NCT01004965",
      "title": "Study of Bone Marrow and Blood Samples in Patients With Untreated Acute Myeloid Leukemia or Acute Lymphoblastic Leukemia Enrolled on Clinical Trial CALGB-9621 or CALGB-9720",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leukemia"
      ],
      "interventions": [
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 2034,
      "start_date": "1997-03-15",
      "completion_date": "2010-06-16",
      "has_results": false,
      "last_update_posted_date": "2022-08-03",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 46,
      "location_summary": "San Diego, California • Lewes, Delaware • Newark, Delaware + 32 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Lewes",
          "state": "Delaware"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01004965"
    },
    {
      "nct_id": "NCT02500797",
      "title": "Nivolumab With or Without Ipilimumab in Treating Patients With Metastatic Sarcoma That Cannot Be Removed by Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Locally Advanced Bone Sarcoma",
        "Locally Advanced Dedifferentiated Liposarcoma",
        "Locally Advanced Gastrointestinal Stromal Tumor",
        "Locally Advanced Soft Tissue Sarcoma",
        "Metastatic Bone Sarcoma",
        "Metastatic Liposarcoma",
        "Metastatic Soft Tissue Sarcoma",
        "Metastatic Undifferentiated Pleomorphic Sarcoma",
        "Metastatic Unresectable Sarcoma",
        "Pleomorphic Liposarcoma",
        "Stage III Bone Sarcoma AJCC v7",
        "Stage III Soft Tissue Sarcoma AJCC v7",
        "Stage IV Bone Sarcoma AJCC v7",
        "Stage IV Soft Tissue Sarcoma AJCC v7",
        "Stage IVA Bone Sarcoma AJCC v7",
        "Stage IVB Bone Sarcoma AJCC v7",
        "Unresectable Bone Sarcoma",
        "Unresectable Dedifferentiated Liposarcoma",
        "Unresectable Liposarcoma",
        "Unresectable Malignant Gastrointestinal Stromal Tumor",
        "Unresectable Soft Tissue Sarcoma"
      ],
      "interventions": [
        {
          "name": "Ipilimumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "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": 164,
      "start_date": "2015-08-13",
      "completion_date": "2023-04-01",
      "has_results": true,
      "last_update_posted_date": "2023-10-17",
      "last_synced_at": "2026-10-02T07:59:03.525Z",
      "location_count": 651,
      "location_summary": "Anchorage, Alaska • Hot Springs, Arkansas • Little Rock, Arkansas + 402 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/NCT02500797"
    }
  ]
}