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7,114 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 28, 2026). No sign-up needed.
Most recently updated studies · page 28 of 297
- RecruitingHealthy volunteersPhase 1/Phase 2
Vaginal Microbiome Seeding and Health Outcomes in Cesarean-delivered Neonates.
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Falls Church, VA
- Eligibility basics
- Ages 0 mo–50
- RecruitingHealthy volunteersPhase 1
PET Imaging of Radiolabeled Anti-HIV-1 Envelope Monoclonal Antibody (VRC01)
University of California, San Francisco
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Reversing Glucose and Lipid-mediated Vascular Dysfunction
University of Kansas Medical Center
- Location
- Kansas City, KS
- Eligibility basics
- Ages 18–79
- RecruitingHealthy volunteersEarly Phase 1
Prenatal Aspirin and Postpartum Vascular Function
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersPhase 1
B-Complex: A Nutraceutical SANS Countermeasure
National Aeronautics and Space Administration (NASA)
- Location
- Houston, TX
- Eligibility basics
- Ages 20–100
- RecruitingHealthy volunteersEarly Phase 1
Metformin for the Treatment of Microvascular Dysfunction After Gestational Diabetes
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1
Hyperpolarized 13C-pyruvate Metabolic MRI With Traumatic Brain Injury
University of Maryland, Baltimore
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1/Phase 2
First-in-Human Evaluation of an Astrocytic Glutamate Transporter (EAAT2) PET Tracer in Dementia
David Wilson
- Location
- San Francisco, CA
- Eligibility basics
- Ages 40–75
- RecruitingHealthy volunteersPhase 1
Increasing Affordable Fruits and Vegetables for Families With Food Insecurity
University of South Carolina
- Location
- Columbia, SC
- Eligibility basics
- Ages 2–10
- RecruitingHealthy volunteersPhase 1/Phase 2
Investigating Whether Acute Elevation of Fatty Acid Levels Alters Cerebral Glucose Transport and Metabolism
University of North Carolina, Chapel Hill
- Location
- Chapel Hill, NC + 1 other US site
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 1
Ondansetron Use for Preventing Pruritus in Patients Undergoing Cesarean Section
Wayne State University
- Location
- Detroit, MI
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersPhase 1
Identifying Correlates of Brain Microglial Activation in Neuropsychiatric Syndromes: a Dimensional Approach
The University of Texas Health Science Center, Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersOvernight stay mentioned
Inpatient Capture: A Mixed Methods Study to Develop an Inpatient Lung Cancer Screening Program in a Safety Net Hospital.
Physician Affiliate Group of New York
- Location
- New York, NY
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteersEarly Phase 1
Curcumin and EGCG Supplementation to Improve Serum BDNF and Mood Disturbance
Auburn University
- Location
- Auburn, AL
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteersEarly Phase 1
Gene Expression Changes In Young and Geriatric Skin
Wright State University
- Location
- Fairborn, OH
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1
Maternal Choline Supplementation and Cannabis Use During Pregnancy: Impact on Early Brain Development
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Type 1 Diabetes, Endothelin, and Skeletal Muscle Mitochondrial Dysfunction: The Role of Sirtuin-1
Augusta University
- Location
- Augusta, GA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Testing Use of Topical Imipramine in Reducing Ultraviolet B Induced Microvesicle Particle Release in Photosensitive Subjects
Wright State University
- Location
- Fairborn, OH
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteersEarly Phase 1
R01.Aim 2.Study 1: IsoReach
Shirley Ryan AbilityLab
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Imaging Synapses With [11C] UCB-J in the Human Brain
Davidzon, Guido, M.D.
- Location
- Palo Alto, CA + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Promoting Playfulness
Florida Gulf Coast University
- Location
- Fort Myers, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Monoferric for Prenatal Iron Deficiency
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 18–65 · Women only
- RecruitingHealthy volunteersOvernight stay mentioned
Suicide Treatment Alternatives for Teens
Children's Hospital Medical Center, Cincinnati
- Location
- Glen Oaks, NY + 2 other US sites
- Eligibility basics
- Ages 12–18
- RecruitingHealthy volunteersPhase 1
CogT pSOPT Intervention Study
Stanford University
- Location
- Palo Alto, CA
- Eligibility basics
- Ages 60+
Data source: daily sync of the ClinicalTrials.gov API. How we list studies