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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 146 of 297
- RecruitingHealthy volunteers
Tear Fluid for the Detection of Tumor-associated Extracellular Vesicles in Glioblastoma Patients
City of Hope Medical Center
- Location
- Duarte, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Phage-based Control and Limitation of Pathobionts for Microbiome Equilibrium and Resilience
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Feasibility of an Implementation Strategy for a Physical Activity Program in Rural Middle Schools
Indiana University
- Location
- Bloomfield, IN + 1 other US site
- Eligibility basics
- Ages 11–13
- RecruitingHealthy volunteers
DNA Analysis of Blood and Tissue From Patients With Lung Cancer
Massachusetts General Hospital
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
New Heart Imaging Techniques to Evaluate Possible Heart Disease
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Molecular Basis for Variations in Hereditary Colorectal Cancer Syndromes
M.D. Anderson Cancer Center
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration (ALLFTD)
Mayo Clinic
- Location
- Birmingham, AL + 22 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Send-In Sample Collection for Comprehensive Analyses of Innate and Adaptive Immune Responses During Acute COVID-19 and Convalescence
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Rockville, MD
- Eligibility basics
- Ages 0 mo–99
- RecruitingHealthy volunteers
Regional Phenotyping of CF and Non-CF Bronchiectasis
Children's Hospital Medical Center, Cincinnati
- Location
- Cincinnati, OH
- Eligibility basics
- Ages 5–100
- RecruitingHealthy volunteers
Empathic Communication Skills (ECS) Training
Memorial Sloan Kettering Cancer Center
- Location
- Miami, FL + 7 other US sites
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
EMG-Controlled Game to Retrain Upper Extremity Muscle Activation Patterns Following Stroke
VA Office of Research and Development
- Location
- Charleston, SC
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Breathing & Blood Pressure
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Modulation of Brain Oscillations Underlying Working Memory
Massachusetts General Hospital
- Location
- Charlestown, MA
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Achieving Understanding of the Natural History of Sickle Cell Trait (AUNT)
National Alliance for Sickle Cell Centers
- Location
- Birmingham, AL + 7 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
MCI Speech in Noise
Dartmouth-Hitchcock Medical Center
- Location
- Lebanon, NH
- Eligibility basics
- Ages 55–80
- RecruitingHealthy volunteers
Insulin and Insulin Pulses During Fasting
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 25–65
- RecruitingHealthy volunteers
Family Members at INcreased-risk for Developing Inflammatory Bowel Disease
Massachusetts General Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 14+
- RecruitingHealthy volunteers
Philly CEAL- DECIDE+ Adaptation
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 35–75
- RecruitingHealthy volunteers
Ending the Epidemic Interventions in the Dental Setting - UH3
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Transcranial Direct Current Stimulation and Modulation of Affect and Pain
Trustees of Dartmouth College
- Location
- Hanover, NH
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersPhase 2
Consolidative Local Therapy (CLT) in Oligo-metastatic Urothelial Carcinoma
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Nicotinamide Mononucleotide Supplementation for Exercise Tolerance Improvement in Healthy Older Adults
Scott Silveira
- Location
- Beverly Hills, CA
- Eligibility basics
- Ages 60–80
- RecruitingHealthy volunteersPhase 2
Long Term Evaluation of Scapular-inserted Contraceptive Implants
Yale University
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Surgical Thromboprophylaxis Practices in Oncology Patients Within the NCORP Network, STOP-VTE Study
Wake Forest University Health Sciences
- Location
- Kingman, AZ + 101 other US sites
- Eligibility basics
- Ages 18+
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