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7,120 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 26, 2026). No sign-up needed.
Most recently updated studies · page 13 of 297
- RecruitingHealthy volunteersPhase 1/Phase 2
Topical Netarsudil for the Prevention of Proliferative Vitreoretinopathy in Patients With Retinal Detachment
Massachusetts Eye and Ear Infirmary
- Location
- Boston, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
pH1N1 Blinded Challenge Study
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Baltimore, MD + 1 other US site
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 1
Safety Study of MucoCept-CVN
Craig Cohen, MD, MPH
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sleep, Dreaming, and Virtual Reality for Mental Health
Northwestern University
- Location
- Evanston, IL + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Writing About Experiences and Health in Older Adults II
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 1
Danvatirsen Monotherapy Followed by Combination With Venetoclax in Relapsed/Refractory MDS & AML
Montefiore Medical Center
- Location
- The Bronx, NY + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
SV2A & TSPO PET Imaging Measures to Reveal Mechanisms of HIV Neuropathogenesis During Antiretroviral Therapy
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1
Use of Pulsatile Intravenous FSH to Mitigate Reprometabolic Syndrome
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 19–37 · Women only
- RecruitingHealthy volunteersOvernight stay mentioned
Urinary Vitamin C Loss in Diabetic Subjects
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 2Overnight stay mentioned
Effects of Sucralose on Drug Absorption and Metabolism (The SweetMeds Study)
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–60 · Women only
- RecruitingHealthy volunteersPhase 1
Membrane Potential Mapping with18F-TPP
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 21–80
- RecruitingHealthy volunteersPhase 1
Acute Effects of THC in Older Adult
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1/Phase 2
Safety and Immunogenicity of Recombinant Varicella Zoster Virus Vaccine in People With HIV Who Have a CD4 Count Less Than 300 or Greater Than or Equal to 300 and a Healthy Control Population
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Pilot Study on the Effects of Psilocybin on Belief Updating and Insight Formation
Brown University
- Location
- Providence, RI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Investigating the Utility of Demyelination Tracer [18F]3F4AP in Controls and Multiple Sclerosis Subjects
Massachusetts General Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersOvernight stay mentioned
NIMH Rhythms and Blues Study: A Prospective Natural History Study of Motor Activity, Mood States, and Bipolar Disorder
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 8–70
- RecruitingHealthy volunteersPhase 1
Validation of Nanosensor Oxygen Measurement
Children's Hospital of Philadelphia
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
Assessment of [18F]-Fluorocellobiose ([18F]FCB) Pharmacokinetics in Healthy Volunteers and Subjects With Invasive Mold Infections
National Institutes of Health Clinical Center (CC)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteersEarly Phase 1
Entire-body PET Scans for Multiple Sclerosis
Brain Health Alliance
- Location
- Ladera Ranch, CA
- Eligibility basics
- Ages 25–55
- RecruitingHealthy volunteersEarly Phase 1
Testosterone and Neural Function in Men With Spinal Cord Injury
VA Office of Research and Development
- Location
- The Bronx, NY
- Eligibility basics
- Ages 18–80 · Men only
- RecruitingHealthy volunteersPhase 1
The Effects of Cannabidiol on the Driving Performance of Healthy Adults by Dose and Sex
West Virginia University
- Location
- Morgantown, WV
- Eligibility basics
- Ages 18–30
- RecruitingHealthy volunteersPhase 1
Epstein-Barr Virus (EBV) gH/gL/gp42-Ferritin Nanoparticle Vaccine With or Without gp350-Ferritin in Healthy Adults With or Without EBV Infection
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–29
- RecruitingHealthy volunteersEarly Phase 1
Pharmacological Modulation of Brain Oscillations in Memory Processing
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersEarly Phase 1
Effect of Neural Constraints on Movement in Stroke
Northwestern University
- Location
- Chicago, IL
- Eligibility basics
- Ages 18–80
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