{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=testosterone+cypionate",
    "query": {
      "intervention": "testosterone cypionate"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 40,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=testosterone+cypionate&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T13:28:06.499Z",
  "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": "NCT03516812",
      "title": "Testosterone and Olaparib in Treating Patients With Castration-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration-Resistant Prostate Carcinoma",
        "Prostate Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Olaparib",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        },
        {
          "name": "Testosterone Enanthate",
          "type": "DRUG"
        },
        {
          "name": "Testosterone Cypionate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "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": 36,
      "start_date": "2018-08-29",
      "completion_date": "2024-04-12",
      "has_results": true,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03516812"
    },
    {
      "nct_id": "NCT04731376",
      "title": "Perioperative Testosterone Replacement Therapy for the Improvement of Post-Operative Outcomes in Patients With Low Testosterone",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypogonadism",
        "Malignant Urinary System Neoplasm",
        "Urinary System Disorder",
        "Urinary System Neoplasm"
      ],
      "interventions": [
        {
          "name": "Best Practice",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Testosterone Cypionate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Emory University",
      "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": 56,
      "start_date": "2021-01-25",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-26",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04731376"
    },
    {
      "nct_id": "NCT04439799",
      "title": "A Comparison of Side Effects in Hypogonadal Men Treated With Natesto Versus Testosterone Injections",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypogonadism, Male"
      ],
      "interventions": [
        {
          "name": "Testosterone Cypionate 200 Mg/ML",
          "type": "DRUG"
        },
        {
          "name": "Intranasal Testosterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "18 Years to 75 Years · Male only"
      },
      "enrollment_count": 81,
      "start_date": "2020-08-07",
      "completion_date": "2023-02-09",
      "has_results": true,
      "last_update_posted_date": "2023-12-13",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04439799"
    },
    {
      "nct_id": "NCT06450405",
      "title": "Androgen Effects on the Reproductive Neuroendocrine Axis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Transgenderism",
        "Reproductive Issues"
      ],
      "interventions": [
        {
          "name": "Testosterone Cypionate 50 MG/ML Injectable Solution",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 2,
      "start_date": "2025-02-26",
      "completion_date": "2025-03-03",
      "has_results": true,
      "last_update_posted_date": "2025-07-22",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06450405"
    },
    {
      "nct_id": "NCT03091348",
      "title": "Subcutaneous vs. Intramuscular Testosterone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Testosterone Deficiency",
        "Hypogonadism, Male"
      ],
      "interventions": [
        {
          "name": "Testosterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Men's Health Boston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "MALE",
        "summary": "18 Years to 90 Years · Male only"
      },
      "enrollment_count": 4,
      "start_date": "2017-08-29",
      "completion_date": "2018-01-02",
      "has_results": true,
      "last_update_posted_date": "2019-10-08",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "Chestnut Hill, Massachusetts",
      "locations": [
        {
          "city": "Chestnut Hill",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03091348"
    },
    {
      "nct_id": "NCT06111209",
      "title": "The Anabolic Effect of Testosterone on Pelvic Floor Muscles",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stress Urinary Incontinence",
        "Menopause"
      ],
      "interventions": [
        {
          "name": "Testosterone cypionate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "60 Years and older · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2025-02-15",
      "completion_date": "2027-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-26",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06111209"
    },
    {
      "nct_id": "NCT04551144",
      "title": "Effect of Transgender Therapy on Muscle, Fat and Tissue Receptors",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Gender Incongruence",
        "Transgenderism"
      ],
      "interventions": [
        {
          "name": "testosterone cypionate",
          "type": "DRUG"
        },
        {
          "name": "Estradiol Valerate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Louis University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 4,
      "start_date": "2020-10-06",
      "completion_date": "2023-01-18",
      "has_results": false,
      "last_update_posted_date": "2024-01-08",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04551144"
    },
    {
      "nct_id": "NCT03554317",
      "title": "COMbination of Bipolar Androgen Therapy and Nivolumab",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration-resistant Prostate Cancer",
        "Metastatic Prostate Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Testosterone cypionate",
          "type": "DRUG"
        },
        {
          "name": "Nivolumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "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": 45,
      "start_date": "2018-09-05",
      "completion_date": "2023-01-06",
      "has_results": true,
      "last_update_posted_date": "2024-02-20",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 3,
      "location_summary": "San Francisco, California • Baltimore, Maryland • Boston, Massachusetts",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03554317"
    },
    {
      "nct_id": "NCT02248701",
      "title": "Testosterone Plus Finasteride Treatment After Spinal Cord Injury",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Spinal Cord Injury",
        "Spinal Cord Injuries",
        "Trauma, Nervous System",
        "Wounds and Injuries",
        "Central Nervous System Diseases",
        "Nervous System Diseases",
        "Spinal Cord Diseases",
        "Gonadal Disorders",
        "Endocrine System Diseases",
        "Hypogonadism",
        "Genital Diseases, Male"
      ],
      "interventions": [
        {
          "name": "Testosterone Enanthate",
          "type": "DRUG"
        },
        {
          "name": "Finasteride",
          "type": "DRUG"
        },
        {
          "name": "Placebo injection",
          "type": "DRUG"
        },
        {
          "name": "Placebo pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 33,
      "start_date": "2017-04-27",
      "completion_date": "2021-08-13",
      "has_results": true,
      "last_update_posted_date": "2023-09-29",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02248701"
    },
    {
      "nct_id": "NCT02286921",
      "title": "Testosterone Revival Abolishes Negative Symptoms, Fosters Objective Response and Modulates Enzalutamide Resistance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Resistant Metastatic Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Testosterone cypionate",
          "type": "DRUG"
        },
        {
          "name": "Enzalutamide",
          "type": "DRUG"
        },
        {
          "name": "Testosterone Enanthate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "MALE",
        "summary": "18 Years to 80 Years · Male only"
      },
      "enrollment_count": 222,
      "start_date": "2015-01",
      "completion_date": "2020-02-21",
      "has_results": true,
      "last_update_posted_date": "2020-11-06",
      "last_synced_at": "2026-09-02T13:28:06.499Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • Duarte, California • Aurora, Colorado + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02286921"
    }
  ]
}