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
HEPA, PM2.5, and Cardiometabolic Health
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 65–84
- RecruitingHealthy volunteers
EyeConic: Qualification for Cone-Optogenetics
Institute of Molecular and Clinical Ophthalmology Basel
- Location
- San Francisco, CA + 2 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Self-management of Low Back Pain in Horticulture Workers
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Ultrasound Investigation Into Swimming Induced Pulmonary Edema in Open Water Swimming Athletes
Rocky Vista University, LLC
- Location
- Parker, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4
PET Imaging Using the Tracer [18F]VAT to Assess the Antidepressant Effect of Nicotine.
Stony Brook University
- Location
- Stony Brook, NY
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Impact of Supplemental Fiber on Gut and Vascular Health Related in Obesity Phenotypes
Ball State University
- Location
- Muncie, IN
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteers
Optimizing Strength Training in Older Adults
Queens College, The City University of New York
- Location
- Flushing, NY
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
The Effect of Sex Steroid Replacement Therapy in the Hypogonadism and Transgender Active-Duty Population
Walter Reed National Military Medical Center
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Harmful Algal Blooms
University of Central Florida
- Location
- Multiple Locations, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effects of a Specific Substance in Smokers
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 21–40
- RecruitingHealthy volunteers
AB Gait Estim Neurophysiology
Emory University
- Location
- Atlanta, GA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Specialty Compared to Oncology Delivered Palliative Care for Patients With Acute Myeloid Leukemia
Massachusetts General Hospital
- Location
- Birmingham, AL + 19 other US sites
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Countermeasures to Circadian Misalignment
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Addressing Barriers to Achieving Cardiometabolic Disorders Prevention and Treatment Goals for PLWH in the SE US
Duke University
- Location
- Charlotte, NC + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Validating Gulf War Illness Blood Biomarkers
Roskamp Institute Inc.
- Location
- Palo Alto, CA + 2 other US sites
- Eligibility basics
- Ages 35+
- RecruitingHealthy volunteers
Bone Loss, Physical Function and Frailty in Older Women With Sickle Cell Trait Sickle Cell Trait
UConn Health
- Location
- Farmington, CT
- Eligibility basics
- Ages 50+ · Women only
- RecruitingHealthy volunteers
Analysis of Headache Chronification With Imaging, Deep Phenotyping, and Proteomics
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Timing Impact of Early vs. Late Cranioplasty on Hemicraniectomy Outcomes
Thomas Jefferson University
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Ventilatory and Perfusion Abnormalities in Individuals With Post-Acute Sequelae of SARS-CoV-2 Infection
Tufts Medical Center
- Location
- Boston, MA
- Eligibility basics
- Ages 18–99
- RecruitingHealthy volunteers
Comparing Effectiveness of Physician-assisted Versus Self-assisted Pap Smear Collection
Morehouse School of Medicine
- Location
- Atlanta, GA
- Eligibility basics
- Ages 21–65 · Women only
- RecruitingHealthy volunteers
Barriers to Vegetarian Diets
University of Maryland, Baltimore
- Location
- Baltimore, MD + 2 other US sites
- Eligibility basics
- Ages 18–88
- RecruitingHealthy volunteers
Immunoinflammatory Response in Post Cardiac Arrest Syndrome (PCAS)
MaineHealth
- Location
- Portland, ME
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Enhancing Voluntary Motion in Broad Patient Populations With Modular Powered Orthoses
University of Michigan
- Location
- Ann Arbor, MI
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
Quantification & Classification of Inflammatory Cells in Uveitis Using OCT
Oregon Health and Science University
- Location
- Portland, OR
- Eligibility basics
- Ages 5–85
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.