{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=50",
    "query": {
      "intervention": "Blood samples collected",
      "page": 50
    },
    "page_size": 10
  },
  "pagination": {
    "page": 50,
    "page_size": 10,
    "total_count": 4260,
    "total_pages": 426,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=51&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+samples+collected&page=49&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-15T21:26:16.396Z",
  "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": "NCT03923374",
      "title": "Opioid Use Disorder in Pregnancy in Long-Term Maternal/Infant Outcomes",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Opioid-use Disorder",
        "Opioid Use, Unspecified",
        "Buprenorphine Dependence"
      ],
      "interventions": [
        {
          "name": "Subutex / Buprenorphine",
          "type": "DRUG"
        },
        {
          "name": "Fetal & Neonatal MRI",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "DNA/Genetic/Pharmacokenetic Blood Draws",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Senthil Sadhasivam",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 600,
      "start_date": "2018-09-15",
      "completion_date": "2026-12-30",
      "has_results": false,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03923374"
    },
    {
      "nct_id": "NCT04590690",
      "title": "Gut Microbiome and Sex as Risk Factors for Kidney Stones After Bariatric Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bariatric Surgery Candidate"
      ],
      "interventions": [
        {
          "name": "Special diet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 28,
      "start_date": "2020-11-01",
      "completion_date": "2027-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-11",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04590690"
    },
    {
      "nct_id": "NCT03465618",
      "title": "A First in Human Study Using 89Zr-cRGDY Ultrasmall Silica Particle Tracers for Malignant Brain Tumors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Brain Cancer",
        "Pituitary Adenoma"
      ],
      "interventions": [
        {
          "name": "89Zr-DFO-cRGDY-PEG-Cy5-C' dots PET Imaging",
          "type": "DRUG"
        },
        {
          "name": "Blood and Urine samples",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering 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": 17,
      "start_date": "2018-03-07",
      "completion_date": "2027-03",
      "has_results": false,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03465618"
    },
    {
      "nct_id": "NCT05199610",
      "title": "An Open-Label, Single-Dose, Parallel-Group Study of the Pharmacokinetics and Safety of EQ143",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Severe Hepatic Impairment"
      ],
      "interventions": [
        {
          "name": "aumolertinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "EQRx International, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 12,
      "start_date": "2022-03-30",
      "completion_date": "2023-04-01",
      "has_results": false,
      "last_update_posted_date": "2023-04-19",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • St. Petersburg, Florida • San Antonio, Texas",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "St. Petersburg",
          "state": "Florida"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05199610"
    },
    {
      "nct_id": "NCT07560813",
      "title": "NOURISH - A Healthcare-community Partnership to Improve Nutrition for Optimal Glycemic Control and Pregnancy Outcomes With Pregestational Diabetes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes",
        "Type 1 Diabetes",
        "Pregnancy, High Risk"
      ],
      "interventions": [
        {
          "name": "Mid-Ohio Food Farmacy (MOF+) produce delivery",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Nutrition education with Dining with Diabetes (DWD)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Impact Ohio Central Ohio Pathways Hub to address unmet social needs",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "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": 174,
      "start_date": "2026-07-06",
      "completion_date": "2030-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-14",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07560813"
    },
    {
      "nct_id": "NCT05111574",
      "title": "Using Nivolumab Alone or With Cabozantinib to Prevent Mucosal Melanoma Return After Surgery",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Anal Melanoma",
        "Bladder Melanoma",
        "Cervical Melanoma",
        "Esophageal Melanoma",
        "Gallbladder Melanoma",
        "Head and Neck Mucosal Melanoma",
        "Mucosal Melanoma",
        "Nasopharyngeal Mucosal Melanoma",
        "Oral Cavity Mucosal Melanoma",
        "Penile Mucosal Melanoma",
        "Rectal Melanoma",
        "Recurrent Mucosal Melanoma",
        "Sinonasal Mucosal Melanoma",
        "Urethral Melanoma",
        "Urinary System Mucosal Melanoma",
        "Vaginal Melanoma",
        "Vulvar Melanoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Scan",
          "type": "PROCEDURE"
        },
        {
          "name": "Cabozantinib S-malate",
          "type": "DRUG"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo Administration",
          "type": "DRUG"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "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": 101,
      "start_date": "2022-08-11",
      "completion_date": "2027-07-15",
      "has_results": false,
      "last_update_posted_date": "2026-08-04",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 142,
      "location_summary": "Auburn, California • Berkeley, California • Fremont, California + 116 more",
      "locations": [
        {
          "city": "Auburn",
          "state": "California"
        },
        {
          "city": "Berkeley",
          "state": "California"
        },
        {
          "city": "Fremont",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05111574"
    },
    {
      "nct_id": "NCT05447910",
      "title": "Analysis of Letrozole in Patients With Operable Hormone Receptor Positive, HER2 Negative Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Adenocarcinoma",
        "Invasive Breast Carcinoma",
        "Resectable Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "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": 21,
      "start_date": "2022-07-21",
      "completion_date": "2023-09-27",
      "has_results": false,
      "last_update_posted_date": "2025-06-15",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05447910"
    },
    {
      "nct_id": "NCT01815229",
      "title": "Role of Neutrophil Activation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Patients Requiring Endotracheal Intubation"
      ],
      "interventions": [
        {
          "name": "tracheal lavages",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 82,
      "start_date": "2013-03",
      "completion_date": "2017-07",
      "has_results": true,
      "last_update_posted_date": "2019-07-15",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01815229"
    },
    {
      "nct_id": "NCT06343129",
      "title": "Effects of a Whole-food, Plant-based Nutrition Program on BP and Potassium in Subjects With CKD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Kidney Diseases"
      ],
      "interventions": [
        {
          "name": "Dietary education program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 43,
      "start_date": "2020-10-26",
      "completion_date": "2022-12-12",
      "has_results": false,
      "last_update_posted_date": "2024-04-17",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 2,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06343129"
    },
    {
      "nct_id": "NCT02230202",
      "title": "Endothelial Microparticles: A Novel Marker of Vascular Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Flow-mediated dilation",
          "type": "OTHER"
        },
        {
          "name": "single blood draw",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 90,
      "start_date": "2014-09",
      "completion_date": "2016-03",
      "has_results": false,
      "last_update_posted_date": "2018-02-28",
      "last_synced_at": "2026-10-15T21:26:16.396Z",
      "location_count": 2,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02230202"
    }
  ]
}