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
CPRIT: Patient Adherence to Lung Cancer Screening
M.D. Anderson Cancer Center
- Location
- Houston, TX
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteers
Effect of Sex on Orthostatic Intolerance and Cardiovascular Response During Lunar Descent and Ascent
National Aeronautics and Space Administration (NASA)
- Location
- Houston, TX
- Eligibility basics
- Ages 25–55
- RecruitingHealthy volunteers
Microbiome Sampling During Endurance Exercise
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
TRAC-ER Intervention to Reduce Risky Alcohol Use and HIV Risk
University of Kentucky
- Location
- New Haven, CT + 1 other US site
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Impact Trial of Helping Educational Leaders Mobilize Evidence
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4
Intravenous Iron Effects on Performance at High Altitude
United States Army Research Institute of Environmental Medicine
- Location
- Natick, MA
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Galactagogue Use in Lactating Women With Low Milk Supply
Winthrop University
- Location
- Rock Hill, SC
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
The Effects of Post-Operative Interventions on Surgical Site Occurrences in AWR
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Pimavanserin and Aggression and Social Cognition.
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersPhase 2
Effect of Nitrous Oxide on Aggression.
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersPhase 2
Neural Correlates During Alcohol Intoxication
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteers
UCF Deciding Brains
University of Central Florida
- Location
- Orlando, FL
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteers
Postpartum Ultrasound Evaluation to Assess Risk of Hemorrhage
Endeavor Health
- Location
- Evanston, IL
- Eligibility basics
- Ages 17+ · Women only
- RecruitingHealthy volunteers
Language Outcomes, Mechanisms, and Trajectories in Adults With and Without Developmental Language Disorder
University of Iowa
- Location
- Iowa City, IA
- Eligibility basics
- Ages 30–35
- RecruitingHealthy volunteers
Caregiver Wellness After Traumatic Brain Injury (CG-WELL): An Intervention Designed to Promote Well-being in Caregivers of Acute Moderate to Severe Traumatic Brain Injuries
Natalie Kreitzer
- Location
- Cincinnati, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Supporting Resilience Among Re-entered Seniors
University of Louisville
- Location
- Louisville, KY
- Eligibility basics
- Ages 45+ · Men only
- RecruitingHealthy volunteers
University of Central Florida BEEAST
University of Central Florida
- Location
- Orlando, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Extending Dental Care to Nursing Home Residents to Reduce Mouth Infections and Incidence of Pneumonia and Improve Diabetic Glucose Control
Missouri Department of Health and Senior Services
- Location
- Jefferson City, MO
- Eligibility basics
- Ages 60–100
- RecruitingHealthy volunteers
The Genetics of Pulmonary Fibrosis
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
LIMIT Trial - Lidocaine With Intramuscular Injection of Benzathine Penicillin G for Treponema Pallidum Treatment
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Puberty, Diabetes, and the Kidneys, When Eustress Becomes Distress (PANTHER Study)
Petter Bjornstad
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 8–14
- RecruitingHealthy volunteers
Investigating Health Impacts of Exposure to Harmful Algal Blooms
Roskamp Institute Inc.
- Location
- Sarasota, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Scaling up Maternal Health Equity Best Practices
Michigan State University
- Location
- Flint, MI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Stress Management for College Students
Boise State University
- Location
- Boise, ID
- Eligibility basics
- Ages 18+
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.