| Not Yet Recruiting | Testosterone Replacement Therapy in Hypogonadal Patients With Prostate Cancer Under Active Surveillance NCT07278362 | University of Miami | Phase 4 |
| Not Yet Recruiting | Ambulatory Blood Pressure Monitoring (ABPM) Study in Hypogonadal Men NCT07328542 | Azurity Pharmaceuticals | Phase 4 |
| Recruiting | EndoPAT Device for Endothelial Dysfunction in ED NCT06720597 | University of California, Irvine | N/A |
| Active Not Recruiting | TRT as an Adjunctive ERAS Therapy in ESRD Patients Undergoing Kidney Transplantation NCT07287800 | University of California, Los Angeles | Phase 1 / Phase 2 |
| Recruiting | Fertility Enhancement Through Regenerative Treatment in Ovaries and Testes NCT06841328 | Jumeirah American Clinic | — |
| Recruiting | 52 Week Study + 24-Month Long-Term Extension of Safety, PK, & Efficacy of XYOSTED® for Testosterone Replacemen NCT06689085 | Halozyme Therapeutics | Phase 3 |
| Recruiting | ERectile Dysfunctions, gOnadotoxicity and Sexual Health Assessment in Men With Lung Cancer NCT06532149 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | — |
| Unknown | Single-Dose Pharmacokinetics of Oral Testosterone Undecanoate With and Without Concomitant Inhibition of UGT2B NCT06312761 | University of Washington | Phase 1 / Phase 2 |
| Withdrawn | The Effects of Natesto For Treatment Of Hypogonadism NCT04717362 | Baylor College of Medicine | EARLY_Phase 1 |
| Unknown | Exploring the Relationship Between Androgen Metabolism, Metabolic Disease and Skeletal Muscle Energy Balance i NCT05773183 | Royal College of Surgeons, Ireland | — |
| Unknown | Physical Exercise as a Sustainability Tool in Men With Dysmetabolic Hypogonadism NCT06094036 | Istituto Auxologico Italiano | N/A |
| Terminated | Late Subclinical Cardiovascular Disease in Testicular Cancer Survivors NCT05611307 | Indiana University | — |
| Completed | Natesto Spermatogenesis Reboot NCT05381831 | University of Florida | Phase 4 |
| Recruiting | Testosterone Treatment in Men with Chronic Kidney Disease NCT05249634 | St. Louis University | Phase 2 |
| Recruiting | Effects of Testosterone Undecanoate vs Placebo on Intrahepatic Fat Content in Overweight/Obese Men With T2DM o NCT03851627 | Alexandra Kautzky-Willer | Phase 4 |
| Unknown | Perioperative Testosterone Replacement Therapy in Sarcopenic Male Colorectal Cancer Patients NCT05367284 | London North West Healthcare NHS Trust | — |
| Recruiting | Pain Alleviation With Testosterone in Opioid-Induced Hypogonadism NCT04798469 | Brigham and Women's Hospital | Phase 2 |
| Terminated | A Randomized, Double-blinded, Clinical, Placebo-controlled Trial on the Effects of Therapy With Letrozole and NCT05205837 | Rigshospitalet, Denmark | Phase 4 |
| Unknown | The Impact of Sinopharm COVID-19 Vaccination on Male Fertility NCT04946565 | Cairo University | — |
| Recruiting | Testosterone Replacement in Male Cancer Survivors With Fatigue and Low Testosterone NCT04049331 | Seattle Institute for Biomedical and Clinical Research | Phase 2 |
| Completed | Effects of High Intensity Statin Therapy on Steroid Hormones and Vitamin D in Type 2 Diabetic Men NCT05806723 | Hopital La Rabta | Phase 4 |
| Recruiting | Improving Cancer-related Fatigue, Sexual Dysfunction and Quality of Life in Older Men With Cancer and Androgen NCT04301765 | Seattle Institute for Biomedical and Clinical Research | Phase 2 |
| Completed | Salivary Testosterone in Men: Diurnal Variation and Post-Prandial Responses NCT04326673 | The Royal Wolverhampton Hospitals NHS Trust | — |
| Completed | Vogelxo(R) ABPM Study in Hypogandal Men NCT04558567 | Upsher-Smith Laboratories | Phase 4 |
| Completed | A Comparison of Side Effects in Hypogonadal Men Treated With Natesto Versus Testosterone Injections NCT04439799 | University of Miami | Phase 4 |
| Completed | A Study of the Effect of Testosterone Replacement Therapy on Blood Pressure in Adult Male Participants With Hy NCT04456296 | Endo Pharmaceuticals | Phase 4 |
| Completed | Ambulatory Blood Pressure Monitoring (ABPM) Extension Study of Oral Testosterone Undecanoate in Hypogonadal Me NCT04467697 | Marius Pharmaceuticals | Phase 3 |
| Completed | Assessment of Blood From Men Receiving Oral TU in Various Collection Tubes NCT03973840 | Clarus Therapeutics, Inc. | Phase 1 |
| Completed | Ambulatory Blood Pressure Monitoring in Oral Testosterone Undecanoate (TU, LPCN 1021) Treated Hypogonadal Men NCT03868059 | Lipocine Inc. | Phase 3 |
| Terminated | A Phase 1/2a Study to Determine the Dose Response Pharmacokinetics of TSX-011 (Testosterone Undecanoate) in Hy NCT03335254 | TesoRx Pharma, LLC | Phase 1 / Phase 2 |
| Completed | Natesto Effects on Testosterone, Luteinizing Hormone, Follicle Stimulating Hormone and Semen Parameters NCT03203681 | University of Miami | Phase 4 |
| Completed | Strength Training as a Supplemental Therapy of Androgen Deficiency of the Aging Male NCT03282682 | Comenius University | N/A |
| Completed | Subcutaneous vs. Intramuscular Testosterone NCT03091348 | Men's Health Boston | Phase 4 |
| Completed | Efficacy and Safety of Oral Testosterone Undecanoate in Hypogonadal Men NCT03198728 | Marius Pharmaceuticals | Phase 3 |
| Withdrawn | Periodontal Profile of Hypogonadic Men NCT03176537 | Universidade Federal do Paraná | Phase 4 |
| Completed | Calciotropic Effects After HCG Stimulation Test NCT03254641 | Martin Blomberg Jensen | — |
| Completed | Dosing Flexibility Study of Oral Testosterone Undecanoate (TU, LPCN 1021) NCT03242408 | Lipocine Inc. | Phase 3 |
| Completed | Dosing Validation Study of Oral Testosterone Undecanoate (TU, LPCN 1021). NCT03242590 | Lipocine Inc. | Phase 3 |
| Completed | Anastrazole and Clomiphene to Evaluate Hypogonadal Symptoms and Erectile Function NCT03933618 | Albany Medical College | Phase 2 |
| Completed | Testosterone-Dependent Effects on Protein Biomarkers From Healthy Males NCT03541395 | Lund University | N/A |
| Completed | Sperm Retrieval Rates in Non-obstructive Azoospermic Men Subjected to Gonadotropin Therapy NCT05110391 | ANDROFERT - Clinica de Andrologia e Reproducao Humana | — |
| Completed | Study on Effects of Testosterone Replacement Therapy in Hypogonadal Type 2 Diabetic Patients" (SETH2) NCT03792321 | University Medical Centre Ljubljana | Phase 4 |
| Completed | Gonadal Function in Young to Middle Aged HIV-infected Men NCT03747003 | Azienda Ospedaliero-Universitaria di Modena | — |
| Completed | Clomid in Men With Low Testosterone With and Without Prior Treatment NCT01904734 | Phoenix VA Health Care System | Phase 2 |
| Completed | 28-Day Study of Testosterone Co-administered With Dutasteride in Hypogonadal Men NCT00398580 | GlaxoSmithKline | Phase 2 |
| Completed | Study On Bioavailability And Pharmacokinetics Of Various Doses Of Testosterone Administered With And Without D NCT00400335 | GlaxoSmithKline | Phase 1 |