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.
4,991 recruiting studiesSource: ClinicalTrials.gov, refreshed October 28, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
Upper Body Subcutaneous Exosome Release in Response to a Meal in Obesity
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteers
Evaluation of Decision-Making Fatigue After Traumatic Brain Injury
University of Minnesota
- Location
- Minneapolis, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Sun Safe Together: A Digital Skin Cancer Prevention Intervention for Adolescents and Their Parents
Rutgers, The State University of New Jersey
- Location
- New Brunswick, NJ
- Eligibility basics
- Ages 13+
- RecruitingHealthy volunteers
BabaCare: Testing a Care Copilot
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
The Effects of Sleep on Human Microbiota: Implications for Health and Disease
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Autoimmune Features of Neurodegenerative Disorders
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 55–90
- RecruitingHealthy volunteers
Sleep Duration and Cardiovascular Health
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 25–65
- RecruitingHealthy volunteers
Prospective Evaluation of Pathways for Preterm Birth
John O'Brien, MD
- Location
- Lexington, KY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 2
Low Dose Tamoxifen With or Without Omega-3 Fatty Acids for Breast Cancer Risk Reduction
National Cancer Institute (NCI)
- Location
- Kansas City, KS + 2 other US sites
- Eligibility basics
- Ages 45–74 · Women only
- RecruitingHealthy volunteers
Routine Validation and Reproducibility Testing of Laboratory Measures and Research Techniques Used for Metabolism Research (VAL)
Bettina Mittendorfer
- Location
- Columbia, MO
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Effects of Hypoxic Breathwork
University of California, San Diego
- Location
- La Jolla, CA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
This Study Involves a Positron Emission Tomography (PET) Scan Using a New Investigational Radioactive Tracer, [18F]-FZTA, to Detect Inflammation in the Brain.
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effects of Ketogenic Diet on Alcohol Intoxication
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
Gestational Response, Outcomes, and Weight After GLP-1 Use
University of Kansas Medical Center
- Location
- Kansas City, KS
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Pupillary Dilation Reflex in Healthy Volunteers
Children's National Research Institute
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Natural History Study of and Genetic Modifiers in Spinocerebellar Ataxias
Lauren Moore
- Location
- Los Angeles, CA + 13 other US sites
- Eligibility basics
- Ages 6+
- RecruitingHealthy volunteers
A Stepped Care Approach to Treating Dental Fear
New York University
- Location
- New York, NY
- Eligibility basics
- Ages 13–99
- RecruitingHealthy volunteers
Discovering New Targets for Colorectal and Endometrial Cancer Risk Reduction
Weill Medical College of Cornell University
- Location
- New York, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Examining an Intervention to Reduce High School Drinking
Binghamton University
- Location
- Binghamton, NY
- Eligibility basics
- Ages 15–65
- RecruitingHealthy volunteers
Strength Training Exercise in Pediatric Acute Lymphoblastic Leukemia and Lymphoblastic Lymphoma (STEP-ALL)
UNC Lineberger Comprehensive Cancer Center
- Location
- Chapel Hill, NC
- Eligibility basics
- Ages 6+
- RecruitingHealthy volunteers
Perinatal Autism Genetics and Epigenetics Study
University of Iowa
- Location
- Iowa City, IA
- Eligibility basics
- Ages 0 mo–50
- RecruitingHealthy volunteers
Providing Access to the Visual Environment
Vanderbilt University
- Location
- Nashville, TN
- Eligibility basics
- Ages 3–21
- RecruitingHealthy volunteers
Using Machine Learning to Optimize User Engagement and Clinical Response to Digital Mental Health Interventions
Boston University Charles River Campus
- Location
- Boston, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparison of Breast Cancer Screening With CESM to DBT in Women With Dense Breasts
American College of Radiology
- Location
- Birmingham, AL + 10 other US sites
- Eligibility basics
- Ages 45–74 · 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.