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
Investigation of Egg Intake and the Relationship Between Gut Microbiome, Metabolic, and Immune Profiles
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Trial Evaluating Nutritional Fiber in Digestive Symptoms of Endometriosis
LOAM Science
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 2
Study of Cross-Cutting E-Health Prevention Approaches
University of New Hampshire
- Location
- Durham, NH
- Eligibility basics
- Ages 18–24
- RecruitingHealthy volunteers
Comparative Effect of Training Methods to Reduce Forefoot Loading in Carbon Fiber Custom Dynamic Orthoses
Jason Wilken
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
A Community Based Intervention to Improve Cervical Cancer Screening Among Women in the Hispanic and East African Immigrant Community
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 30–65 · Women only
- RecruitingHealthy volunteers
Study of Mycobacterial Infections
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Up to age 100
- RecruitingHealthy volunteers
Magnetic Resonance Elastography as a Method to Estimate Stiffness of Soft Tissues
Arunark Kolipaka
- Location
- Columbus, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Magnetic Resonance Elastography in Patients With Abdominal Aortic Aneurysms
Ohio State University
- Location
- Columbus, OH
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteersPhase 2
Pilot Trial of Allogeneic Blood or Marrow Transplantation for Primary Immunodeficiencies
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 4–75
- RecruitingHealthy volunteers
Sample Collection From Healthy Volunteers for Assay Optimization
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 3–80
- RecruitingHealthy volunteers
Characterization of an Optically Pumped Magnetometer (OPM) Magnetoencephalography (MEG) Array
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Whole Genome Sequencing (ChromoSeq) as an Adjunct to Conventional Genomic Profiling in AML and MDS
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Oxygen Toxicity: Mechanisms in Humans
Duke University
- Location
- Durham, NC
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 3
Randomized Clinical Trial of Two Different Initial Growth Hormone Doses in Children
Northwell Health
- Location
- New York, NY
- Eligibility basics
- Ages 5–15
- RecruitingHealthy volunteers
Reliability of Force Measurement Within the Carbon Fiber Orthosis Proximal Cuff
University of Iowa
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Socialization To Enrich Participation & Support Sexuality for Young People With I/DD
City University of New York, School of Public Health
- Location
- New York, NY
- Eligibility basics
- Ages 16–27
- RecruitingHealthy volunteers
Exercise Facilitation of Adolescent Fear Extinction, Frontolimbic Circuitry, and Endocannabinoids
Wayne State University
- Location
- Detroit, MI
- Eligibility basics
- Ages 14–17
- RecruitingHealthy volunteers
Oral Health Intervention in Adult Primary Care
Case Western Reserve University
- Location
- Cleveland, OH
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteers
Helpline Pilot Factorial Trial
The National Center on Addiction and Substance Abuse at Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Home Visitation Enhancing Linkages Project in Kansas
The National Center on Addiction and Substance Abuse at Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteersPhase 3
Hormone Replacement Therapy in Adolescents With Premature Ovarian Insufficiency
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 11–19 · Women only
- RecruitingHealthy volunteers
Weight Loss Through Mayo Clinic Diet
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteers
Feasibility Trial of Combination of Obstetrical Carrier Screening and Hereditary Cancer Screening
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 18–55 · Women only
- RecruitingHealthy volunteers
Cardiac Structure and Function in MPS
Children's Hospital of Orange County
- Location
- Orange, CA + 1 other US site
- Eligibility basics
- Ages 0 mo–99
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.