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
Changes in Inhibition and Valuation After Eating
Icahn School of Medicine at Mount Sinai
- Location
- New York, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 2
Fiber and Calcium Absorption in Older Men
VA Office of Research and Development
- Location
- San Francisco, CA
- Eligibility basics
- Ages 60+ · Men only
- RecruitingHealthy volunteers
The Effect of Intraoral Transcutaneous Electrical Nerve Stimulation in Orthodontics Pain
University of the Pacific
- Location
- San Francisco, CA
- Eligibility basics
- Ages 12+
- RecruitingHealthy volunteers
Individual Factors of CBT Underlying Success
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Effects of Whole-body Electrical Muscle Stimulation Exercise on Spinal Motoneuronal Activation in Older Adults
University of Missouri-Columbia
- Location
- Columbia, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Native Spirit: Significant Aim 3: Intervention
Arizona State University
- Location
- Scottsdale, AZ
- Eligibility basics
- Ages 12–17
- RecruitingHealthy volunteers
The ROAR Study: Reactive Oxygen Species and Reproduction
University of California, San Francisco
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–43
- RecruitingHealthy volunteers
Assessment of Risks of Perinephric Fat Thickness to Adverse Renal Outcomes Post Donor Nephrectomy
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 3
Cognitive Strategies in Early Psychosis 1
University of Minnesota
- Location
- Minneapolis, MN
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteers
Screening and Staging of Benign vs Malignant Pelvic Abnormalities
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Biomarkers Study in Infants With Prior Neonatal Brain Injury
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 4 mo–2
- RecruitingHealthy volunteers
Hemophilia A Research Program
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Study of Placental Function in Healthy and Pathological Pregnancies
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Effects of High Altitude on AMPK Activation
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
A Cross-sectional Study Examining Adipose Tissue in Obstructive Sleep Apnea
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Implications of the Human Microbiota for Health and Disease
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Rheumatology Patient Registry and Biorepository
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–99
- RecruitingHealthy volunteers
Spectroscopic Evaluation of Middle Ear Infection
University of California, Irvine
- Location
- Orange, CA + 1 other US site
- Eligibility basics
- Up to age 21
- RecruitingHealthy volunteers
CARBON: UAB Cardiovascular Research Biobank
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
TRUsted rEsidents and Housing Assistance to Decrease Violence Exposure in New Haven
Yale University
- Location
- New Haven, CT + 6 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Analysis of T and B Cell Repertoire Changes in Response to Orencia® (Abatacept) in Rheumatoid Arthritis
Hospital for Special Surgery, New York
- Location
- New York, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
MyChart Proxy Outreach to Parents (MyPOP)
Yale University
- Location
- New Haven, CT + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Pregabalin Plus Lofexidine for the Outpatient Treatment of Opioid Withdrawal
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Social & QoL Behaviors in Parkinson's Disease
Gregory Wallace
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 40+
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.