Core: healthy volunteers
Studies for healthy volunteers recruiting now
These studies say in their official record that they accept healthy volunteers. Many are Phase 1 studies that test how a new medicine is absorbed and tolerated; others recruit healthy people as a comparison group alongside patients.
5,002 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
Prebiotic Effects of California Grapes on Gut Health and Cardiometabolic Health in Overweight Men and Women
University of California, Davis
- Location
- Davis, CA
- Eligibility basics
- Ages 45–70
- RecruitingHealthy volunteersPhase 2
Ultralow Dose PET Imaging of 18F-Florbetapir, 18F-Flutemetamol
Akiva Mintz
- Location
- Englewood, NJ
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Neuroimaging of Parkinson's
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
Sickle Cell Kidney Biorepository
University of Texas Southwestern Medical Center
- Location
- Dallas, TX + 1 other US site
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Optimizing Liver MRI Using Breath-Holding With and Without Oxygen
University of California, San Francisco
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Validation of Presence-IP1.0 for Detection of Consciousness Using Reduced-Montage TMS-EEG
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
PREnatal Choline and Infant Outcomes Study
East Carolina University
- Location
- Greenville, NC
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Evaluation of Circles of Safety
Center for Violence Prevention Research Inc
- Location
- Gainesville, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Kidney Cancer DNA Registry
Memorial Sloan Kettering Cancer Center
- Location
- Basking Ridge, NJ + 6 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4
Intraperitoneal Infusion of Analgesic for Postoperative Pain Management
Ying Liu
- Location
- Washington D.C., DC + 1 other US site
- Eligibility basics
- Ages 18–65 · Women only
- RecruitingHealthy volunteers
Role of GABAergic Transmission in Auditory Processing in Autism Spectrum Disorder
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 11–25
- RecruitingHealthy volunteersPhase 2/Phase 3
PRECISION-BP: Precision Chronopharamacotherapy Targeting NP-RAAS-BP Rhythm Axis
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Breaking up Prolonged Sedentary Behavior to Improve Cardiometabolic Health
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Neuromodulation and Fatigue
University of Oklahoma
- Location
- Norman, OK
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
The Effects of Exercise on Immune Phenotype of Indolent Non-Hodgkin Lymphoma and Chronic Lymphocytic Leukemia Patients
Mayo Clinic
- Location
- Scottsdale, AZ + 1 other US site
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Immune Function and the Progression to T1D
University of Florida
- Location
- Gainesville, FL + 2 other US sites
- Eligibility basics
- Ages 0 mo–100
- RecruitingHealthy volunteers
A Global Study of the PETAL Consortium
Massachusetts General Hospital
- Location
- Duarte, CA + 9 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
HVIP Outcomes and Stakeholder Insights
Medical University of South Carolina
- Location
- Charleston, SC
- Eligibility basics
- Ages 16+
- RecruitingHealthy volunteersPhase 3
Azithromycin Prophylaxis for PRElabor CEsarean DElivery Trial
The George Washington University Biostatistics Center
- Location
- Birmingham, AL + 13 other US sites
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteers
The SENTRY Study: Testing Whether Changes in Platelet RNA Enhance the Early Diagnosis of Ovarian Cancer
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 21+ · Women only
- RecruitingHealthy volunteers
Designing a Dyad-Based mHealth Intervention to Improve Adherence to Lifestyle Recommendations in Colorectal Cancer Survivors and Their Family Caregivers
Ohio State University Comprehensive Cancer Center
- Location
- Columbus, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Establishing Walking-related Digital Biomarkers in Rare Childhood Onset Progressive Neuromuscular Disorders
Columbia University
- Location
- Palo Alto, CA + 2 other US sites
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Effect of Peanut Butter on Gut and Metabolic Health
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 6–13
- RecruitingHealthy volunteersPhase 3
Aspirin Dose Escalation for the Prevention of Recurrent Preterm Delivery Trial
The George Washington University Biostatistics Center
- Location
- Birmingham, AL + 13 other US sites
- Eligibility basics
- Ages 14+ · Women only
Who these studies look for
“Healthy” is decided at screening, not by you. Sites usually check vital signs, blood and urine tests, an ECG, your medications and sometimes your BMI or smoking status. A study can still turn you away for reasons that have nothing to do with being unwell, such as timing or a full roster.
Matching a page like this one never means you qualify. Each research team decides eligibility at screening.
Questions
Do healthy volunteer studies pay?
Many do, because volunteers give up time and follow strict schedules, but amounts are set by each study and are usually only confirmed by the research site. When a record states an amount we show the exact wording; otherwise we say compensation is not disclosed.
What happens at a screening visit?
Expect consent paperwork first, then a health questionnaire, vital signs, blood and urine samples and often an ECG. You can ask questions and withdraw at any time, before or after you sign.