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
Caregiving Networks Across Disease Context and the Life Course
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteersPhase 4
Comparing Immune Response of 2 vs 3 HPV Doses (27-45 Years Old)
The University of Texas Medical Branch, Galveston
- Location
- Galveston, TX
- Eligibility basics
- Ages 27–45 · Women only
- RecruitingHealthy volunteers
UPURS Trial for Patient-centered Management of Symptomatic Obstructing Stones
University of California, San Francisco
- Location
- Aurora, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Using Urine Samples to Identify Lung Cancer
Memorial Sloan Kettering Cancer Center
- Location
- Basking Ridge, NJ + 6 other US sites
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Immediate Versus Delayed Loading of Maxillary Overdenture Implants
Case Western Reserve University
- Location
- Cleveland, OH + 1 other US site
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Four Pillars of Defense: A Whole Health Approach to the Military
Pennington Biomedical Research Center
- Location
- Baton Rouge, LA
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Athlete Needs Assessment & Focus Groups
Pennington Biomedical Research Center
- Location
- Baton Rouge, LA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Brain Blood Vessel Responses to Changes in Blood Flow
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 55–69
- RecruitingHealthy volunteers
Multi-Site Detection of Barrett's Esophagus in Patients Without Chronic GERD Symptoms
Case Comprehensive Cancer Center
- Location
- Aurora, CO + 4 other US sites
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteers
Testing a WearabLE Artificial Intelligence-POwered Device For OPtimal DAily RaDiation Therapy Using Image Guidance
Medical College of Wisconsin
- Location
- Milwaukee, WI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Impact of Vitamin D Supplements on Mental Health and Milk Composition in Mothers Living in Idaho
University of Idaho
- Location
- Coeur d'Alene, ID + 1 other US site
- Eligibility basics
- Ages 18–64 · Women only
- RecruitingHealthy volunteers
Peer Influences in Alcohol and Sexual Violence Among Marines Dyads
Georgia State University
- Location
- Atlanta, GA
- Eligibility basics
- Ages 21+ · Men only
- RecruitingHealthy volunteers
mSCI: Mobile Health App for Veterans With SCI and Caregivers
University of Pittsburgh
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Recovery Inspired Support Engagement (RISE) Pilot
Mclean Hospital
- Location
- Belmont, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Almonds, Gut Microbiome and Kids
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 6–13
- RecruitingHealthy volunteers
Pulse Education and Children
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 6–13
- RecruitingHealthy volunteers
Effects of Pork Protein on Recovery Following Simulated Fireground Activity
Sam Houston State University
- Location
- Fort Worth, TX + 1 other US site
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
The Effects of Pacifier-Activated Lullaby on Oral Feeding Among Preterm Infants
Nemours Children's Clinic
- Location
- Orlando, FL
- Eligibility basics
- Ages 8 mo–8 mo
- RecruitingHealthy volunteers
Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic
The Cleveland Clinic
- Location
- Cleveland, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Viral Infections in Healthy and Immunocompromised Hosts
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 6 mo–120
- RecruitingHealthy volunteersPhase 2/Phase 3
Milk Volume Outcomes Following Oral Nicotinamide Riboside Supplementation in Mothers of Extremely Preterm Infants
University of California, Davis
- Location
- Sacramento, CA
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteersPhase 2
Impact of Project ECHO on Improving the Quality of Palliative Care in Patients With Advanced Cancer and Their Caregivers in Underserved Areas of Kenya, Nigeria, Ghana, South Africa, India, and Ethiopia
M.D. Anderson Cancer Center
- Location
- Houston, TX
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Study of Disrupted Sleep in Somali Americans
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
The Role of the Locus Coeruleus in Age-related Distractibility
Virginia Polytechnic Institute and State University
- Location
- Blacksburg, VA
- Eligibility basics
- Ages 18–75
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.