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 volunteersPhase 2
Acute Effects of Cannabis on Cognition and Affect
Washington State University
- Location
- Pullman, WA
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Acute Mental Fatigue and Muscle Strength
Florida Institute for Human and Machine Cognition
- Location
- Pensacola, FL
- Eligibility basics
- Ages 18–39
- RecruitingHealthy volunteers
Heat Therapy During Reduced Physical Activity
Brigham Young University
- Location
- Provo, UT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Natural History, Management, and Genetics of the Hyperimmunoglobulin E Recurrent Infection Syndrome (HIES)
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 1 mo–120
- RecruitingHealthy volunteers
Apheresis and Specimen Collection Procedures to Obtain Plasma, Peripheral Blood Mononuclear Cells (PBMCs) and Other Specimens for Research Studies
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 3+
- RecruitingHealthy volunteers
Immune Cell Response to Stimuli
National Institute of Environmental Health Sciences (NIEHS)
- Location
- Research Triangle Park, NC
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Physical and Behavioral Traits of Overweight and Obese Adults
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteersPhase 2
Effects of Treatments on Atopic Dermatitis
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–50
- RecruitingHealthy volunteers
Evaluation of Adults With Endocrine and Metabolic-Related Conditions
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Technical Development of Cardiovascular Magnetic Resonance Imaging (CMR) Using a Low Specific Absorption Rate (SAR) Scanner System
National Heart, Lung, and Blood Institute (NHLBI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Liver X Receptor (LXR) as a Novel Therapeutic Target in Diabetic Retinopathy (DR)
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 21–98
- RecruitingHealthy volunteers
Older Breast Cancer Patients: Risk for Cognitive Decline
Georgetown University
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 60–105 · Women only
- RecruitingHealthy volunteers
Disease Modifying Potential of 5mg of Melatonin on Cognition and Brain Health in Aging
Natalie Denburg
- Location
- Iowa City, IA
- Eligibility basics
- Ages 56–85
- RecruitingHealthy volunteers
Deceased Uterine Transplant in Absolute Uterine Infertility (AUIF)
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Obstructive Sleep Apnea Among Somali-Americans
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Neural Correlates of Real World Spatial Navigation in Humans
Duke University
- Location
- Los Angeles, CA + 1 other US site
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Improving Spatial Perception and Speech Understanding in Multitalker Mixtures
Boston University Charles River Campus
- Location
- Boston, MA
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteers
Evaluation of the Acceptability, Appropriateness, and Feasibility/Usability of a Metastatic Breast-cancer Specific Prognostic Calculator Among Clinicians
UNC Lineberger Comprehensive Cancer Center
- Location
- Chapel Hill, NC
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Development and Validation of Learning and Decision-Making Tasks
National Institute on Drug Abuse (NIDA)
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Comparing Reduction With ESD- Versus APC-TORe
Stephen Firkins
- Location
- Cleveland, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Pancreatic Cancer Detection Consortium
City of Hope Medical Center
- Location
- Phoenix, AZ + 8 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Evaluation of a Health System Integrated Model for Postpartum Education and Support in Rural Populations
Wake Forest University Health Sciences
- Location
- Winston-Salem, NC
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
Retropubic Hydrodissection and Trocar-induced Bladder Perforation During Retropubic Midurethral Slings
University of Massachusetts, Worcester
- Location
- Worcester, MA
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
SPARC - Screening for Lung Cancer With Platelets Via an AI-enabled RNA-based Classifier
University of Utah
- Location
- Salt Lake City, UT + 1 other US site
- Eligibility basics
- Ages 21+
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.