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
VRC 900: Evaluation of Tissue-Specific Immune Responses in Adults 18 Years of Age and Older
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Defining the Brain Phenotype of Children With Williams Syndrome
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 5–99
- RecruitingHealthy volunteers
Study of the Effect of Innate on the Inflammatory Response to Endotoxin
National Institute of Environmental Health Sciences (NIEHS)
- Location
- Research Triangle Park, NC
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Natural History Evaluation of Charcot Marie Tooth Disease (CMT) Types CMT1B, CMT2A, CMT4A, CMT4C, and Others
Michael Shy
- Location
- Los Angeles, CA + 17 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Genetics of Charcot Marie Tooth (CMT) - Modifiers of CMT1A, New Causes of CMT2
University of Iowa
- Location
- Los Angeles, CA + 17 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Studies of Disorders With Increased Susceptibility to Fungal Infections
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
DICER1-related Pleuropulmonary Blastoma Cancer Predisposition Syndrome: A Natural History Study
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 1 mo–99
- RecruitingHealthy volunteers
Environmental Risk Factors for the Anti-synthetase Syndrome
National Institute of Environmental Health Sciences (NIEHS)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 2–100
- RecruitingHealthy volunteers
Screening Volunteers for Clinical Trials
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
National Eye Institute Biorepository for Retinal Diseases
National Eye Institute (NEI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–120
- RecruitingHealthy volunteers
Oral Bacteria and Immune System Problems Involved in Gum Disease (Periodontitis)
National Institute of Dental and Craniofacial Research (NIDCR)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 7–100
- RecruitingHealthy volunteers
The NIH MINI Study: Metabolism, Infection, and Immunity in Inborn Errors of Metabolism
National Human Genome Research Institute (NHGRI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 1 mo–115
- RecruitingHealthy volunteers
Oral Specimen and Data Acquisition Study of Subjects Requiring Third Molar Removal
National Institute of Dental and Craniofacial Research (NIDCR)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 16–50
- RecruitingHealthy volunteers
Electrical Impedance Myography: Natural History Studies inNeuromuscular Disorders and Healthy Volunteers
National Institute of Neurological Disorders and Stroke (NINDS)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 2–110
- RecruitingHealthy volunteersPhase 2
Hematopoietic Stem Cell Mobilization in Idiopathic CD4 Lymphocytopenia Patients and Healthy Controls for the Study of T Cell Maturation and Trafficking in Murine Models
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Care of the Urothelial Cancer Patient and Prospective Procurement of Urothelial Cancer Tissue
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Clinical and Genetic Evaluation of Individuals With Undiagnosed Disorders Through the Undiagnosed Diseases Network
National Human Genome Research Institute (NHGRI)
- Location
- Birmingham, AL + 23 other US sites
- Eligibility basics
- Ages 1 mo–100
- RecruitingHealthy volunteers
Genetics of Inherited Eye Disease
National Eye Institute (NEI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 1–120
- RecruitingHealthy volunteersPhase 2
Neurobiology of Suicide
National Institute of Mental Health (NIMH)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Development and Validation of Patient Reported Outcome (PRO) Measures for Individuals With Neurofibromatosis 1 (NF1) and Plexiform Neurofibromas (pNFs)
National Cancer Institute (NCI)
- Location
- Bethesda, MD + 1 other US site
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Rod and Cone Mediated Function in Retinal Disease
National Eye Institute (NEI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 5–100
- RecruitingHealthy volunteers
Collection of Peripheral Blood Mononuclear Cells (PBMCs) From Healthy People for the Expansion of T Cells for Adoptive Cell Therapy
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 18–120
- RecruitingHealthy volunteers
Long-Term Follow up of Patients Undergoing Hematopoietic Stem Cell Transplantation, Cellular Therapy, or Gene Therapy
National Cancer Institute (NCI)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 4–120
- RecruitingHealthy volunteersPhase 2/Phase 3
PET Tau - Neurodegenerative Disease Imaging
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18–100
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.