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.
4,991 recruiting studiesSource: ClinicalTrials.gov, refreshed October 28, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
Robotic OCT for ER Anterior Eye Exams
Duke University
- Location
- Durham, NC
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Development and Testing of a Patient-facing Educational Tool About Liver Cancer Prevention
M.D. Anderson Cancer Center
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Sensory Strategy to Cut Sugary Beverages in African/American and Latine Adolescents
Nana Gletsu Miller
- Location
- Indianapolis, IN + 1 other US site
- Eligibility basics
- Ages 12–18
- RecruitingHealthy volunteers
PREPARE: Perioperative REhabilitation Around Vaginal Prolapse RepAir Surgery for Recovery Enhancement
University of New Mexico
- Location
- Albuquerque, NM
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
Neurobehavioral Changes Following Spaceflight Stressors
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 21–60
- RecruitingHealthy volunteers
LUNG-07: Advancing Precision-Based Lung Cancer Screening: Implementation, AI-Guided Risk Stratification, and Biomarker Integration (CREST AI)
University of Illinois at Chicago
- Location
- Chicago, IL + 1 other US site
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteers
Healthy Volunteers Enteral Nutrition Study (HEN)
James Lewis
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Behavioral Parent Training to Address Early Childhood Disruptive Behavior Using the DOCS Parenting Programs
University of South Florida
- Location
- Tampa, FL
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Thrive With Type 1 Diabetes 2026
Emory University
- Location
- Atlanta, GA + 1 other US site
- Eligibility basics
- Ages 31–75
- RecruitingHealthy volunteers
Pneumococcal Carriage Duration
University of Central Florida
- Location
- Orlando, FL
- Eligibility basics
- Ages 1 mo–4
- RecruitingHealthy volunteers
Pancreatic Cancer Registry: For Any Person With a Personal or Family History
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Impact of the Enhanced Recovery After Surgery System for Colorectal Surgery
University of Arkansas
- Location
- Little Rock, AR
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Circadian Intervention to Improve Cardiometabolic Health
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Fluad vs. Fluzone High-Dose Vaccine Effectiveness Among Adults ≥65 Years
Kaiser Permanente
- Location
- Oakland, CA
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Metabolic and Physiologic Responses to Hormone Therapy in Transgender and Gender Diverse People
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Prospective Assessment of HPV Associated Anogenital Pathology in Female Patients and Female Partners of Patients With Confirmed HPV Associated Oropharyngeal Carcinoma, PAP-OP Study
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
Optimize Pediatric OCT Imaging
Duke University
- Location
- Durham, NC
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Detection and Characterization of Neurologic Manifestations of Inborn and Acquired Errors of Immunity
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–120
- RecruitingHealthy volunteers
Effect of Sleep Extension on Ceramides in People With Overweight and Obesity
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Social Determinants of Health, Medication Use, and Quality of Life in Inflammatory Bowel Disease
Montefiore Medical Center
- Location
- New York, NY + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparison of Microglial Activation in Severe Asthma and Healthy Controls
University of Wisconsin, Madison
- Location
- Madison, WI
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersPhase 2
Evaluating Gardasil HPV Vaccine Humoral and Cellular Immune Responses in People With and Without HIV
University of Maryland, Baltimore
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–70 · Men only
- RecruitingHealthy volunteers
A Comparison of Neuromuscular Recruitment in Trained and Untrained Adults
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 60–85
- RecruitingHealthy volunteers
Pain With Dementia
Duke University
- Location
- Durham, NC
- Eligibility basics
- Ages 50+
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.