{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample&page=4", "query": { "intervention": "Blood sample", "page": 4 }, "page_size": 10 }, "pagination": { "page": 4, "page_size": 10, "total_count": 62, "total_pages": 7, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample&page=5&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+sample&page=3&page_size=10" }, "source": "local", "last_synced_at": "2026-10-17T18:15:51.177Z", "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": "NCT03792659", "title": "The EXPLORE MG Registry for Myasthenia Gravis", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Myasthenia Gravis" ], "interventions": [ { "name": "Blood Sample Draw", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "Yale University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 800, "start_date": "2016-03-30", "completion_date": "2026-10-30", "has_results": false, "last_update_posted_date": "2025-11-28", "last_synced_at": "2026-07-31T17:53:13.701Z", "location_count": 1, "location_summary": "New Haven, Connecticut", "locations": [ { "city": "New Haven", "state": "Connecticut" } ], "official_url": "https://clinicaltrials.gov/study/NCT03792659" }, { "nct_id": "NCT07148245", "title": "Symptoms of Immune Checkpoint Inhibitor Therapy in Cutaneous Melanoma", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Cutaneous Melanoma", "Cutaneous Melanoma by AJCC V7 Stage", "Cutaneous Melanoma, Stage III", "Cutaneous Melanoma, Stage IV" ], "interventions": [ { "name": "Blood Sample", "type": "PROCEDURE" }, { "name": "Health Related Quality of Life Questionnaires (HRQoL)", "type": "OTHER" }, { "name": "Medical Chart Review", "type": "OTHER" } ], "intervention_types": [ "PROCEDURE", "OTHER" ], "sponsor": "University of California, San Francisco", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 300, "start_date": "2025-10-13", "completion_date": "2027-06-30", "has_results": false, "last_update_posted_date": "2025-11-10", "last_synced_at": "2026-10-14T08:42:19.447Z", "location_count": 1, "location_summary": "San Francisco, California", "locations": [ { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT07148245" }, { "nct_id": "NCT04352244", "title": "The Physiology of Human Brown Adipose Tissue", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Adipose Tissue", "Adipose Tissue, Brown", "Obesity" ], "interventions": [ { "name": "Blood sample for DNA analysis", "type": "GENETIC" }, { "name": "Blood sampling", "type": "DIAGNOSTIC_TEST" }, { "name": "Fat biopsy", "type": "PROCEDURE" } ], "intervention_types": [ "GENETIC", "DIAGNOSTIC_TEST", "PROCEDURE" ], "sponsor": "Beth Israel Deaconess Medical Center", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 40, "start_date": "2020-03-05", "completion_date": "2027-06-30", "has_results": false, "last_update_posted_date": "2025-10-31", "last_synced_at": "2026-10-15T20:31:57.179Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT04352244" }, { "nct_id": "NCT05564026", "title": "Molecular Epidemiology of Pediatric Germ Cell Tumors", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Choriocarcinoma", "Embryonal Carcinoma", "Germ Cell Tumor", "Germinoma", "Late Effects", "Mixed Germ Cell Tumor", "Pediatric Germ Cell Tumor", "Teratoma", "Yolk Sac Tumor" ], "interventions": [ { "name": "Blood Sample Collection", "type": "PROCEDURE" }, { "name": "Germline DNA Samples", "type": "OTHER" }, { "name": "Questionnaire Administration", "type": "OTHER" }, { "name": "Tumor Specimen Collection", "type": "OTHER" } ], "intervention_types": [ "PROCEDURE", "OTHER" ], "sponsor": "Children's Oncology Group", "sponsor_class": "NETWORK", "healthy_volunteers": null, "eligibility": { "minimum_age": null, "maximum_age": null, "sex": "ALL", "summary": "Not listed" }, "enrollment_count": 1151, "start_date": "2023-04-12", "completion_date": "2027-06-30", "has_results": false, "last_update_posted_date": "2025-10-24", "last_synced_at": "2026-10-16T19:53:09.518Z", "location_count": 1, "location_summary": "Minneapolis, Minnesota", "locations": [ { "city": "Minneapolis", "state": "Minnesota" } ], "official_url": "https://clinicaltrials.gov/study/NCT05564026" }, { "nct_id": "NCT04107285", "title": "Looking at Cognitive and Brain Changes in People With Lymphoma Receiving CAR-T Therapy", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Lymphoma Receiving CAR-T Therapy" ], "interventions": [ { "name": "Blood samples", "type": "OTHER" }, { "name": "brain MRIs", "type": "DIAGNOSTIC_TEST" }, { "name": "neurocognitive evaluations", "type": "BEHAVIORAL" } ], "intervention_types": [ "OTHER", "DIAGNOSTIC_TEST", "BEHAVIORAL" ], "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": 120, "start_date": "2019-09-25", "completion_date": "2026-09", "has_results": false, "last_update_posted_date": "2025-10-24", "last_synced_at": "2026-10-16T12:15:52.832Z", "location_count": 1, "location_summary": "New York, New York", "locations": [ { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT04107285" }, { "nct_id": "NCT04794322", "title": "Developing a Test of Uterine Lavage for the Detection of Ovarian Cancer", "overall_status": "RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Fallopian Tube Neoplasms", "High Grade Ovarian Serous Adenocarcinoma", "Ovarian Epithelial Carcinoma", "Ovarian Neoplasms", "Stage I Ovarian Cancer", "Stage II Ovarian Cancer", "Stage III Ovarian Cancer AJCC v8", "Stage IIIA Ovarian Cancer AJCC v8", "Stage IIIA1 Ovarian Cancer AJCC v8", "Stage IIIA2 Ovarian Cancer AJCC v8", "Stage IIIB Ovarian Cancer AJCC v8", "Stage IIIC Ovarian Cancer AJCC v8", "Stage IV Ovarian Cancer AJCC v8", "Stage IVA Ovarian Cancer AJCC v8", "Stage IVB Ovarian Cancer AJCC v8" ], "interventions": [ { "name": "Blood sample", "type": "DIAGNOSTIC_TEST" }, { "name": "Pap smear", "type": "DIAGNOSTIC_TEST" }, { "name": "Uterine lavage, or a wash of the womb", "type": "DIAGNOSTIC_TEST" } ], "intervention_types": [ "DIAGNOSTIC_TEST" ], "sponsor": "Massachusetts General Hospital", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "30 Years", "maximum_age": null, "sex": "FEMALE", "summary": "30 Years and older · Female only" }, "enrollment_count": 250, "start_date": "2020-04-13", "completion_date": "2028-08-31", "has_results": false, "last_update_posted_date": "2025-09-16", "last_synced_at": "2026-10-17T18:15:51.177Z", "location_count": 6, "location_summary": "Little Rock, Arkansas • San Francisco, California • Annapolis, Maryland + 3 more", "locations": [ { "city": "Little Rock", "state": "Arkansas" }, { "city": "San Francisco", "state": "California" }, { "city": "Annapolis", "state": "Maryland" }, { "city": "Baltimore", "state": "Maryland" }, { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT04794322" }, { "nct_id": "NCT07226466", "title": "Evaluating Biomarkers of Cognitive Dysfunction in Patients With Cancer", "overall_status": "NOT_YET_RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Brain Metastases From Solid Tumors", "Brain Tumor", "Brain Tumor Adult", "Brain Tumor, Primary" ], "interventions": [ { "name": "Blood sample", "type": "PROCEDURE" }, { "name": "Brain Health Assessment", "type": "PROCEDURE" }, { "name": "Brain magnetic resonance imaging (MRI)", "type": "PROCEDURE" }, { "name": "Quality of Life (QoL) Questionnaire", "type": "RADIATION" } ], "intervention_types": [ "PROCEDURE", "RADIATION" ], "sponsor": "University of California, San Francisco", "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": "2026-09-01", "completion_date": "2028-12-31", "has_results": false, "last_update_posted_date": "2026-08-18", "last_synced_at": "2026-10-13T20:46:33.092Z", "location_count": 1, "location_summary": "San Francisco, California", "locations": [ { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT07226466" }, { "nct_id": "NCT07734467", "title": "Immune Response to PSF in Idiopathic vs Neuromuscular Scoliosis", "overall_status": "NOT_YET_RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Idiopathic Scoliosis", "Neuromuscular Scoliosis", "Posterior Spinal Fusion" ], "interventions": [ { "name": "Serum blood samples for serum biomarkers of immune response", "type": "DIAGNOSTIC_TEST" } ], "intervention_types": [ "DIAGNOSTIC_TEST" ], "sponsor": "Ambrish Patel", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "0 Years", "maximum_age": "99 Years", "sex": "ALL", "summary": "0 Years to 99 Years" }, "enrollment_count": 20, "start_date": "2026-10", "completion_date": "2029-12", "has_results": false, "last_update_posted_date": "2026-08-06", "last_synced_at": "2026-10-14T13:56:42.496Z", "location_count": 1, "location_summary": "Columbus, Ohio", "locations": [ { "city": "Columbus", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT07734467" }, { "nct_id": "NCT07636213", "title": "BRIDGE-US: Bridging Readiness in Deployed Neurotrauma Gaps for Excellence", "overall_status": "NOT_YET_RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Brain Injuries, Acute", "Brain Trauma", "Penetrating Head Injury", "Traumatic Brain Injury" ], "interventions": [ { "name": "Blood Sample Collection", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "University of Chicago", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "16 Years", "maximum_age": null, "sex": "ALL", "summary": "16 Years and older" }, "enrollment_count": 270, "start_date": "2026-07-01", "completion_date": "2035-12-31", "has_results": false, "last_update_posted_date": "2026-06-09", "last_synced_at": "2026-08-08T07:23:22.160Z", "location_count": 1, "location_summary": "Chicago, Illinois", "locations": [ { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT07636213" }, { "nct_id": "NCT06899971", "title": "The Association Between Tau & GFAP and Postoperative Neurological Impairment in Patients Undergoing Cardiac Surgery", "overall_status": "NOT_YET_RECRUITING", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Brain Injury", "Cardiac Surgery Requiring Cardiopulmonary Bypass", "Congenital Heart Defect" ], "interventions": [ { "name": "Collecting discarded blood samples", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "Boston Children's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": null, "maximum_age": "18 Years", "sex": "ALL", "summary": "Up to 18 Years" }, "enrollment_count": 100, "start_date": "2026-05-01", "completion_date": "2027-12-31", "has_results": false, "last_update_posted_date": "2026-03-17", "last_synced_at": "2026-10-14T08:41:04.614Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT06899971" } ] }