{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=testosterone&page=4",
    "query": {
      "intervention": "testosterone",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 517,
    "total_pages": 52,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=testosterone&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=testosterone&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-18T12:08:30.131Z",
  "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": "NCT05498272",
      "title": "Study of Neoadjuvant PARP Inhibition Followed by Radical Prostatectomy in Patients With Unfavorable Intermediate-Risk or High-Risk Prostate Cancer With Select HRR Gene Alterations",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer",
        "BRCA1 Mutation",
        "BRCA2 Mutation",
        "Prostatic Adenocarcinoma",
        "High-Risk Cancer"
      ],
      "interventions": [
        {
          "name": "Olaparib",
          "type": "DRUG"
        },
        {
          "name": "LHRH agonist",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rana McKay, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 32,
      "start_date": "2023-02-01",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-10",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 6,
      "location_summary": "La Jolla, California • Baltimore, Maryland • New York, New York + 2 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05498272"
    },
    {
      "nct_id": "NCT04743466",
      "title": "Evaluation of Association Between Testosterone Levels, Dementia, and Adverse Mental Health Outcomes",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Anxiety Disorder",
        "Depression",
        "Genetic Disorder",
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Malignant Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1,
      "start_date": "2020-02-13",
      "completion_date": "2028-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04743466"
    },
    {
      "nct_id": "NCT02599545",
      "title": "Testosterone and Cortisol Levels in Infants",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Infant, Premature",
        "Infant, Very Low Birth Weight"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Minute",
        "maximum_age": "72 Hours",
        "sex": "ALL",
        "summary": "1 Minute to 72 Hours"
      },
      "enrollment_count": 300,
      "start_date": "2015-10",
      "completion_date": "2017-02-02",
      "has_results": false,
      "last_update_posted_date": "2024-04-12",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02599545"
    },
    {
      "nct_id": "NCT02256865",
      "title": "Hormonal Mechanisms of Sleep Restriction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Insulin Resistance"
      ],
      "interventions": [
        {
          "name": "Ketoconazole",
          "type": "DRUG"
        },
        {
          "name": "Hydrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Testosterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for ketoconazole",
          "type": "DRUG"
        },
        {
          "name": "Placebo for hydrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Placebo for testosterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "22 Years to 45 Years · Male only"
      },
      "enrollment_count": 40,
      "start_date": "2014-10",
      "completion_date": "2023-10",
      "has_results": false,
      "last_update_posted_date": "2025-09-11",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Torrance, California",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02256865"
    },
    {
      "nct_id": "NCT03436745",
      "title": "The Effects of Castration on the Pharmacokinetics of Zolpidem After Single Dose Administration In Men With Prostate Cancer Undergoing Androgen Deprivation Therapy Compared to Normal Healthy Females",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Zolpidem",
          "type": "DRUG"
        },
        {
          "name": "ECG",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2019-01-22",
      "completion_date": "2024-01-30",
      "has_results": true,
      "last_update_posted_date": "2026-06-26",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03436745"
    },
    {
      "nct_id": "NCT01403116",
      "title": "Safety and Efficacy Trial of Oral Testosterone Undecanoate (TU) in Hypogonadal Men",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Male Hypogonadism"
      ],
      "interventions": [
        {
          "name": "Oral testosterone undecanoate",
          "type": "DRUG"
        },
        {
          "name": "topical testosterone gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Clarus Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "18 Years to 75 Years · Male only"
      },
      "enrollment_count": 325,
      "start_date": "2011-07",
      "completion_date": "2013-09",
      "has_results": true,
      "last_update_posted_date": "2018-08-14",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Calera, Alabama • Huntsville, Alabama + 20 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Calera",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01403116"
    },
    {
      "nct_id": "NCT00182871",
      "title": "Testosterone Effects on Bone and Frailty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Aging",
        "Frailty",
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "testosterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute on Aging (NIA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "60 Years and older · Male only"
      },
      "enrollment_count": 140,
      "start_date": "2001-11",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2009-10-30",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00182871"
    },
    {
      "nct_id": "NCT00056654",
      "title": "Study of a 6-Month Sustained-Release Formulation of Leuprolide Acetate in Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostatic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Leuprolide acetate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 164,
      "start_date": "2003-03",
      "completion_date": "2004-07",
      "has_results": false,
      "last_update_posted_date": "2008-09-17",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 55,
      "location_summary": "Homewood, Alabama • Huntsville, Alabama • Anchorage, Alaska + 49 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Encino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00056654"
    },
    {
      "nct_id": "NCT06455969",
      "title": "Adaptions and Resiliency to Multi-Stressor OpeRations",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Musculoskeletal Injury",
        "Hypogonadism",
        "Hormonal Contraception"
      ],
      "interventions": [
        {
          "name": "Goserelin 3.6 MG",
          "type": "DRUG"
        },
        {
          "name": "Multi-Stressor Training",
          "type": "OTHER"
        },
        {
          "name": "Testosterone gel (AndroGel 5g)",
          "type": "DRUG"
        },
        {
          "name": "Testosterone gel (AndroGel 1.25g)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Bradley Nindl",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 120,
      "start_date": "2024-07-15",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06455969"
    },
    {
      "nct_id": "NCT00002924",
      "title": "Gene Mutations in Patients With Advanced Prostate Cancer That Is Not Responsive to Hormone Therapy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "mutation analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 184,
      "start_date": "1997-01",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2016-07-14",
      "last_synced_at": "2026-10-18T12:08:30.131Z",
      "location_count": 49,
      "location_summary": "Birmingham, Alabama • La Jolla, California • San Francisco, California + 30 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00002924"
    }
  ]
}