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
An 8-Week Study Evaluating Gut and Digestive Health After Use of a Dietary Supplement System
SF Research Institute, Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
The Effects of One Day of Activity on the Next Day's Exercise Response
Concordia University Wisconsin
- Location
- Mequon, WI
- Eligibility basics
- Ages 18–30
- RecruitingHealthy volunteersPhase 3
Improving Smoking Abstinence Outcomes in the African American Community Through Extended Treatment
University of Kansas Medical Center
- Location
- Kansas City, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Lung Cancer Screening in High-risk Black Individuals
Massachusetts General Hospital
- Location
- Chicago, IL + 1 other US site
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteers
Gut Microbiome Studies in Patients With POEMS Syndrome and Other Plasma Cell Disorders
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Physical Activity and Community EmPOWERment Project
University of North Carolina, Chapel Hill
- Location
- Chapel Hill, NC
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Literacy Instruction Through Media for Everyone
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 3–4
- RecruitingHealthy volunteers
Neurofeedback to Reduce Spontaneous Recovery of Threat Expectancy
Trustees of Princeton University
- Location
- Princeton, NJ
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Effect of Dietary Nitrate on Immobilization-induced Changes in Skeletal Muscle in Young Healthy Men
Indiana University
- Location
- Indianapolis, IN
- Eligibility basics
- Ages 18–44 · Men only
- RecruitingHealthy volunteers
Triple EIT (Electrical Impedance Tomography)
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 0 mo–25
- RecruitingHealthy volunteers
Circulating Tumor DNA (ctDNA) for Early Treatment Response Assessment of Solid Tumors
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Brain Research Apprenticeships in New York at Columbia
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 15+
- RecruitingHealthy volunteers
Effects of Neuromodulation in Laryngeal Dystonia
MGH Institute of Health Professions
- Location
- Boston, MA
- Eligibility basics
- Ages 21–85
- RecruitingHealthy volunteersPhase 2
Exercise to Improve Brain Health in Older African Americans
Rutgers, The State University of New Jersey
- Location
- Newark, NJ
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteers
Outreach Core Activities
H. Lee Moffitt Cancer Center and Research Institute
- Location
- Tampa, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Structural Racism, Reward Related Decision Making and Substance Use Risk
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 11–14
- RecruitingHealthy volunteers
Zinc and Iron Absorption From Common Beans in Young Adult Women
University of California, Davis
- Location
- Davis, CA
- Eligibility basics
- Ages 19–24 · Women only
- RecruitingHealthy volunteers
An Investigation of Attentional and Inhibitory Processes During Active Visual Search in Humans
University of Colorado, Denver
- Location
- Denver, CO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
HPV Self-Collection Program
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 25–65 · Women only
- RecruitingHealthy volunteers
TMS for Cognitive Decline in Aging and Preclinical AD
Massachusetts General Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 40–99
- RecruitingHealthy volunteers
A Multicenter Prospective Observational Cohort Study Evaluating the Impact of Cancer-Directed Treatment and Medication Use, Including Cannabis Use, in Multiple Myeloma Patients
City of Hope Medical Center
- Location
- Duarte, CA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Pistachio Intake and Nutrition-Related Outcomes in Individuals on GLP-1 Therapy
Ian J. Neeland, MD
- Location
- Clevland, OH
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Cytokine Response to Abdominal Wall Reconstruction
Northwestern University
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Knee Osteoarthritis Rehabilitation Through Rotational Inertia
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 40–70
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.