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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 134 of 297
- RecruitingHealthy volunteers
NIRS Monitoring in the NICU and AKI
NYU Langone Health
- Location
- New York, NY
- Eligibility basics
- Ages 6 mo–7 mo
- RecruitingHealthy volunteers
Coaching and Leadership in Autism Support Settings
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Palatal Wound Healing After Free Gingival Graft Harvest in Diabetic Patients: A Clinical Trial
Mauro Santamaria
- Location
- Lexington, KY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Rise & Thrive: Community-Engagement Intervention for Stress and Depression in Youth.
Ann & Robert H Lurie Children's Hospital of Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 15–20
- RecruitingHealthy volunteers
Repetitive Transcranial Magnetic Stimulation on Motor Function and Meta-Plasticity in Cerebral Palsy: TMS-EEG Study
Cook Children's Health Care System
- Location
- Fort Worth, TX
- Eligibility basics
- Ages 6–20
- RecruitingHealthy volunteers
Developing and Implementing HPV SCREENED
Rutgers, The State University of New Jersey
- Location
- New Brunswick, NJ
- Eligibility basics
- Ages 30–65 · Women only
- RecruitingHealthy volunteers
Investigation of Egg Intake and the Relationship Between Gut Microbiome, Metabolic, and Immune Profiles
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Trial Evaluating Nutritional Fiber in Digestive Symptoms of Endometriosis
LOAM Science
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 2
Study of Cross-Cutting E-Health Prevention Approaches
University of New Hampshire
- Location
- Durham, NH
- Eligibility basics
- Ages 18–24
- RecruitingHealthy volunteers
Comparative Effect of Training Methods to Reduce Forefoot Loading in Carbon Fiber Custom Dynamic Orthoses
Jason Wilken
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
A Community Based Intervention to Improve Cervical Cancer Screening Among Women in the Hispanic and East African Immigrant Community
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 30–65 · Women only
- RecruitingHealthy volunteers
Study of Mycobacterial Infections
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Up to age 100
- RecruitingHealthy volunteers
Magnetic Resonance Elastography as a Method to Estimate Stiffness of Soft Tissues
Arunark Kolipaka
- Location
- Columbus, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Magnetic Resonance Elastography in Patients With Abdominal Aortic Aneurysms
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteersPhase 2
Pilot Trial of Allogeneic Blood or Marrow Transplantation for Primary Immunodeficiencies
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 4–75
- RecruitingHealthy volunteers
Sample Collection From Healthy Volunteers for Assay Optimization
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 3–80
- RecruitingHealthy volunteers
Characterization of an Optically Pumped Magnetometer (OPM) Magnetoencephalography (MEG) Array
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Whole Genome Sequencing (ChromoSeq) as an Adjunct to Conventional Genomic Profiling in AML and MDS
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Oxygen Toxicity: Mechanisms in Humans
Duke University
- Location
- Durham, NC
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 3
Randomized Clinical Trial of Two Different Initial Growth Hormone Doses in Children
Northwell Health
- Location
- New York, NY
- Eligibility basics
- Ages 5–15
- RecruitingHealthy volunteers
Reliability of Force Measurement Within the Carbon Fiber Orthosis Proximal Cuff
University of Iowa
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Socialization To Enrich Participation & Support Sexuality for Young People With I/DD
City University of New York, School of Public Health
- Location
- New York, NY
- Eligibility basics
- Ages 16–27
- RecruitingHealthy volunteers
Exercise Facilitation of Adolescent Fear Extinction, Frontolimbic Circuitry, and Endocannabinoids
Wayne State University
- Location
- Detroit, MI
- Eligibility basics
- Ages 14–17
- RecruitingHealthy volunteers
Oral Health Intervention in Adult Primary Care
Case Western Reserve University
- Location
- Cleveland, OH
- Eligibility basics
- Ages 55+
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