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
Identification and Differentiation of Thyroid Nodules by Acoustic Imaging and Viscoelastic Parameters
Mayo Clinic
- Location
- Scottsdale, AZ + 2 other US sites
- Eligibility basics
- Ages 8+
- RecruitingHealthy volunteers
Modulating Temporoparietal Junction Mentalizing-Related Activity in Autism Spectrum Disorder (ASD) Using Transcranial Magnetic Stimulation (TMS)
Yale University
- Location
- Hartford, CT
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Assessments of Adipogenesis, Lipid Turnover and Cellular Composition in Adipose Tissue in Response to Endurance Exercise
AdventHealth Translational Research Institute
- Location
- Orlando, FL
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 2
Inflammatory Challenge in Human Aggression.
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteers
Age-Related Macular Degeneration Benchmark Imaging Dataset (ABID)
University of Wisconsin, Madison
- Location
- Fargo, ND + 6 other US sites
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteers
Improving Speech in Noise Using Noninvasive Stimulation
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 25–55
- RecruitingHealthy volunteers
Leveraging Community-clinical Linkages to Address Unmet Social Needs for People With Diabetes
Mary Lacy
- Location
- Lexington, KY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Vibrotactile Balance Belt Effect on Improving Gait
Johns Hopkins University
- Location
- Baltimore, MD + 1 other US site
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Understanding Practices of Lactation and Infant Feeding Together With Women With HIV in the United States
International Maternal Pediatric Adolescent AIDS Clinical Trials Group
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Behavior and Risk Awareness Through Video Education for Firefighters
University of California, Davis
- Location
- Sacramento, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Brain Effects of Gamma Frequency Sensory Stimulation (40Hz Light, Sound and Other Devices)
Massachusetts Institute of Technology
- Location
- Cambridge, MA
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Targeted Transcranial Magnetic Stimulation to Improve Hippocampal-dependent Declarative Memory Abilities
University of Nebraska
- Location
- Omaha, NE
- Eligibility basics
- Ages 19+
- RecruitingHealthy volunteers
Examining the Role of Female Endogenous Sex Hormones in Eccentric Exercise
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–35 · Women only
- RecruitingHealthy volunteers
Neonatal Platelet Transfusion Threshold Trial
NICHD Neonatal Research Network
- Location
- Birmingham, AL + 19 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Advancing Pediatric Retinal Imaging With Auto-aligned OCT
Duke University
- Location
- Durham, NC
- Eligibility basics
- Ages 1 mo+
- RecruitingHealthy volunteers
Breast Cancer Study Tracking Risk Awareness of Alcohol Consumption and Improving Knowledge in Young Adult Women
Ohio State University Comprehensive Cancer Center
- Location
- Columbus, OH
- Eligibility basics
- Ages 18–25 · Women only
- RecruitingHealthy volunteers
HELIOS Advanced: Human Oocyte Illumination to Enhance Development
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18–48 · Women only
- RecruitingHealthy volunteers
Exercise and Carotid Artery Function in Metabolic Syndrome
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Moon and Sun Brothers: A Community Prevention Intervention (Hermanos de Luna y Sol)
San Francisco State University
- Location
- San Francisco, CA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Feasibility and Ergonomic Impact of A Virtual Reality Headset in Endoscopic Procedures
The Cleveland Clinic
- Location
- Weston, FL
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Heart Transplantation - Renewal
Northwestern University
- Location
- Chicago, IL + 1 other US site
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
A Regional Partnership to Improve Outcomes Through Fatherhood Engagement
Montefiore Medical Center
- Location
- The Bronx, NY
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteersPhase 4
Forebrain Electroneutral Transporters in Salt-sensitive Hypertension: an MRI Study
University of Delaware
- Location
- Newark, DE
- Eligibility basics
- Ages 40–60
- RecruitingHealthy volunteers
Brain NAD in Alzheimer's Disease
Florida Atlantic University
- Location
- Boca Raton, FL
- Eligibility basics
- Ages 65–80
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.