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ClinicalTrials.gov public records Last synced Oct 18, 2026, 9:26 AM EDT

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Showing 1–24 of 57 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Low Testosterone Clear all
Terminated No phase listed Observational

Testosterone and Cortisol Levels in Infants

NCT02599545
View directory record Official record
Conditions
Infant, Premature, Infant, Very Low Birth Weight
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
1 Minute to 72 Hours
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 12, 2024 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Trial of Oral Testosterone Undecanoate (TU) in Hypogonadal Men

NCT01403116
View directory record Official record
Conditions
Male Hypogonadism
Interventions
Oral testosterone undecanoate, topical testosterone gel
Drug
Lead sponsor
Clarus Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
25
States / cities
Birmingham, Alabama • Calera, Alabama • Huntsville, Alabama + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 1 Interventional Results available

Opioid Antagonism in Hypogonadotropic Hypogonadism

NCT04975334
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Low Testosterone
Interventions
Naloxone
Drug
Lead sponsor
Stephanie B. Seminara, MD
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

The Testosterone Trials in Older Men

NCT00799617
View directory record Official record
Conditions
Andropause
Interventions
AndroGel® (testosterone gel), Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
65 Years and older · Male only
Enrollment
790 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2018
U.S. locations
12
States / cities
Birmingham, Alabama • La Jolla, California • Torrance, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2019 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 4 Interventional Results available

Neuroendocrine Dysfunction in Traumatic Brain Injury: Effects of Testosterone Therapy

NCT01201863
View directory record Official record
Conditions
Endocrine Dysfunction, Trauma, Brain Injury
Interventions
Androgel (Testosterone Gel), Placebo gel
Drug · Other
Lead sponsor
Craig Hospital
Other
Eligibility
16 Years to 65 Years · Male only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 2 Interventional Results available

The Effect on Androxal Versus Androgel on Morning Testosterone in Men With Secondary Hypogonadism (Low Testosterone)

NCT01386606
View directory record Official record
Conditions
Secondary Hypogonadism
Interventions
Androxal (enclomiphene citrate), Testosterone
Drug
Lead sponsor
Repros Therapeutics Inc.
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
2
States / cities
Houston, Texas • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Aromatase Inhibition Versus Testosterone in Older Men With Low Testosterone: Randomized-Controlled Trial.

NCT00104572
View directory record Official record
Conditions
Hypogonadism, Diabetes, Sarcopenia, Osteoporosis, Depression
Interventions
Androgel (Testosterone Gel), Anastrozole (Aromatase Inhibitor), Placebo tablet, Placebo gel, Calcium Cardone 500mg with vitamin D 400 IU
Drug · Dietary Supplement
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
65 Years and older · Male only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 6, 2018 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 4 Interventional Results available

A Comparison of Side Effects in Hypogonadal Men Treated With Natesto Versus Testosterone Injections

NCT04439799
View directory record Official record
Conditions
Hypogonadism, Male
Interventions
Testosterone Cypionate 200 Mg/ML, Intranasal Testosterone
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Dec 13, 2023 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

DHEA and Testosterone Replacement in Elderly

NCT00254371
View directory record Official record
Conditions
Aging, Low DHEA for Women, Low Testosterone and DHEA for Men
Interventions
Androgen Replacement
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
60 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2007
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 23, 2011 · Synced Oct 18, 2026, 9:26 AM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

An Open-Label Study of 50 Mg Oral Testosterone Undecanoate (Kyztrex) in Menopausal Women with Low Testosterone and HSDD

NCT06082817
View directory record Official record
Conditions
Hypoactive Sexual Desire Disorder
Interventions
Oral Testosterone Undecanoate
Drug
Lead sponsor
San Diego Sexual Medicine
Other
Eligibility
21 Years to 75 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Oct 18, 2026, 9:26 AM EDT
Completed No phase listed Observational

Outcomes of Mechanically Ventilated Patients With Low Serum Testosterone

NCT00797433
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older · Male only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 21, 2010 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 4 Interventional

Efficacy Study for Use of Dutasteride (Avodart) With Testosterone Replacement

NCT00752869
View directory record Official record
Conditions
Hypogonadism
Interventions
dutasteride, placebo
Drug
Lead sponsor
The Miriam Hospital
Other
Eligibility
40 Years to 85 Years · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
2
States / cities
Boston, Massachusetts • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 26, 2013 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 3 Interventional Results available

Optimizing Protein Intake in Older Americans With Mobility Limitations

NCT01275365
View directory record Official record
Conditions
Mobility Limitation
Interventions
Testosterone enanthate
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
65 Years and older · Male only
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Oct 18, 2026, 9:26 AM EDT
Not listed Phase 2 Interventional

Deslorelin Combined With Low-Dose Add-Back Estradiol and Testosterone in Preventing Breast Cancer in Premenopausal Women Who Are at High Risk for This Disease

NCT00080756
View directory record Official record
Conditions
brca1 Mutation Carrier, brca2 Mutation Carrier, Breast Cancer
Interventions
therapeutic estradiol, deslorelin, therapeutic testosterone, therapeutic conventional surgery, active surveillance, quality-of-life assessment, laboratory biomarker analysis
Biological · Drug · Procedure + 1 more
Lead sponsor
City of Hope Medical Center
Other
Eligibility
21 Years to 48 Years · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2024
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 28, 2024 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Effects of a Supplement on Markers of Male Fertility

NCT07740161
View directory record Official record
Conditions
Male Infertility, Low Sperm Quality, Low Testosterone, Low Energy, Low Libido
Interventions
WeNatal For Him Supplement
Dietary Supplement
Lead sponsor
WeNatal
Industry
Eligibility
30 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Jul 31, 2026 · Synced Oct 18, 2026, 9:26 AM EDT
Recruiting Phase 4 Interventional

Testosterone Replacement Therapy for the Treatment of Low Testosterone in Hypogonadal Men With Localized Prostate Cancer on Active Surveillance

NCT06733350
View directory record Official record
Conditions
Localized Prostate Carcinoma, Stage I Prostate Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage III Prostate Cancer AJCC v8
Interventions
Biopsy of Prostate, Biospecimen Collection, Magnetic Resonance Imaging, Patient Observation, Questionnaire Administration, Therapeutic Testosterone
Procedure · Other · Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiovascular Outcomes of Low Testosterone

NCT02758431
View directory record Official record
Conditions
Hypogonadism
Interventions
Acyline, Placebo Gel, Placebo Tablet, Testosterone Gel, Arimidex
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
232 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 10, 2024 · Synced Oct 18, 2026, 9:26 AM EDT
Active, not recruiting Phase 1 Interventional

Perioperative Testosterone Replacement Therapy for the Improvement of Post-Operative Outcomes in Patients With Low Testosterone

NCT04731376
View directory record Official record
Conditions
Hypogonadism, Malignant Urinary System Neoplasm, Urinary System Disorder, Urinary System Neoplasm
Interventions
Best Practice, Quality-of-Life Assessment, Questionnaire Administration, Testosterone Cypionate
Other · Procedure · Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older · Male only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Oct 18, 2026, 9:26 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy of Qualia Testosterone+ on Testosterone Levels in Adult Males

NCT07556458
View directory record Official record
Conditions
Low Testosterone Levels
Interventions
Qualia Testosterone+, Placebo
Dietary Supplement · Other
Lead sponsor
Qualia Life Sciences
Industry
Eligibility
28 Years to 65 Years · Male only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Carlsbad, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 3 Interventional

A Randomized, Double Blind, Placebo-Controlled, Multi-Center Phase III Study in Men With Acquired Hypogonadotropic Hypogonadism to Compare Changes in Testosterone and Sperm Concentration Following Treatment With 12.5 mg or 25 mg Androxal or AndroGel 1.62%

NCT01993225
View directory record Official record
Conditions
Secondary Hypogonadism
Interventions
Androxal 12.5 mg/25 mg, Placebo Capsules, AndroGel 1.62%, Placebo Gel
Drug
Lead sponsor
Repros Therapeutics Inc.
Industry
Eligibility
18 Years to 60 Years · Male only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
9
States / cities
Birmingham, Alabama • Mobile, Alabama • Evanston, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2014 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 2 Interventional

Study of DHT-Gel to Treat the Symptoms of Low Testosterone in Men 55-80

NCT00163566
View directory record Official record
Conditions
Hypogonadism, Late Onset Hypogonadism, Low Testosterone
Interventions
Dihydrotestosterone (0.7%) in hydroalcoholic gel
Drug
Lead sponsor
ASCEND Therapeutics
Industry
Eligibility
55 Years to 80 Years · Male only
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
16
States / cities
Phoenix, Arizona • Torrance, California • Gainesville, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2022 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 2 Interventional

Treatment of Boys With Precocious Puberty

NCT00001202
View directory record Official record
Conditions
Precocious Puberty
Interventions
Spironolactone, Testolactone, Deslorelin
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1985 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 18, 2026, 9:26 AM EDT
Completed Phase 3 Interventional Results available

Testopel ® vs. Generic Testosterone Pellets.

NCT04523480
View directory record Official record
Conditions
Hypogonadism
Interventions
Testopel 75mg Drug Implant, Testopel 100mg Drug Implant, Testopel 200mg Drug Implant
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Oct 18, 2026, 9:26 AM EDT
Terminated Phase 2 Interventional Results available

Effects of TAK-448 in Middle-aged and Older Men With Low Testosterone

NCT02381288
View directory record Official record
Conditions
Low Testosterone
Interventions
TAK-448, TAK-448 Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
60 Years and older · Male only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 17, 2017 · Synced Oct 18, 2026, 9:26 AM EDT