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
Postural Control in Adults
University of Oklahoma
- Location
- Oklahoma City, OK
- Eligibility basics
- Ages 65–80
- RecruitingHealthy volunteers
Imaging Cannabinoid Receptors Using Positron Emission Tomography (PET) Scanning
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–55 · Men only
- RecruitingHealthy volunteers
HDClarity: a Multi-site Cerebrospinal Fluid Collection Initiative to Facilitate Therapeutic Development for Huntington's Disease
University College, London
- Location
- Englewood, CO + 4 other US sites
- Eligibility basics
- Ages 11–75
- RecruitingHealthy volunteers
Early PKD Observational Cohort Study
University of Kansas Medical Center
- Location
- Chicago, IL + 2 other US sites
- Eligibility basics
- Ages 4–35
- RecruitingHealthy volunteers
Mayo AVC Registry and Biobank
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Using Shared Decision Making to Improve Family Media Use Planning
Seattle Children's Hospital
- Location
- Seattle, WA
- Eligibility basics
- Ages 11+
- RecruitingHealthy volunteers
Development of a Mobile Health Intervention for Electronic Cigarette Use Among Young Adults
University of Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 18–26
- RecruitingHealthy volunteers
Using EMA Data to Inform a Web-intervention for Couples Concerned About Drinking
Stanford University
- Location
- Portland, OR
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Stress and Pain in People Living With HIV
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–68
- RecruitingHealthy volunteers
The Test-to-PrEP Study
University of Miami
- Location
- Miami, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Pilot-Testing Strategies to Improve Outcomes for Youth With Type 2 Diabetes by Addressing Health-Related Social Needs
University of Pittsburgh
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 13+
- RecruitingHealthy volunteers
Effect of Ashwagandha Root Extract on Stress, Anxiety, and Sleep Quality in Adults Experiencing Minority Stress
SF Research Institute, Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Efficacy and Safety of Shatavari Root Extract in Women's Sexual Wellness
SF Research Institute, Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 20–50 · Women only
- RecruitingHealthy volunteers
A Pilot Study to Evaluate the Ability of Lactoferrin to Modulate Iron Homeostasis and Exercise Performance in Exercising Females
Lindenwood University
- Location
- Saint Charles, MO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Effects of Chemotherapy on Cognitive Function in Breast Cancer Patients & Non-Cancer Control Subjects With Optional Sub-Study Research Brain MRI
University of Rochester
- Location
- Rochester, NY
- Eligibility basics
- Ages 21+ · Women only
- RecruitingHealthy volunteers
The ImPreSS Trial: Pharmacogenomic Decision Making at Time of Surgery
University of Chicago
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparison of Residual Gastric Volume Between Children Who Drink Different Clear Oral Fluid Volume
Boston Children's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 13–17
- RecruitingHealthy volunteers
Pregnancy and Developmental Outcomes After Transfer of Reportedly Aneuploid or Mosaic Embryos
Stanford University
- Location
- Sunnyvale, CA
- Eligibility basics
- Ages 18–55 · Women only
- RecruitingHealthy volunteers
Can the Language Environment Analysis Start Program Improve Children's Readiness for School? LENA Program Evaluation
William Marsh Rice University
- Location
- Houston, TX
- Eligibility basics
- Ages 1–2
- RecruitingHealthy volunteers
Smoke Free SafeCare: Establishing a Smoke Free Home in CPS-involved Families
Georgia State University
- Location
- Atlanta, GA
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteers
Strain-Counterstrain Treatment of Piriformis Pain
Loma Linda University
- Location
- Loma Linda, CA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
mHealth Mindfulness With Patients With Serious Illness and Their Caregivers
Rutgers, The State University of New Jersey
- Location
- Livingston, NJ + 2 other US sites
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer
San Raffaele University
- Location
- Denver, CO + 1 other US site
- Eligibility basics
- Ages 18–49
- RecruitingHealthy volunteersPhase 2
Examining Mu Opioid Mechanisms of Ketamine's Rapid Effects in OCD (MKET2)
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18–65
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.