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.
4,995 recruiting studiesSource: ClinicalTrials.gov, refreshed October 27, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteersPhase 1/Phase 2
Curcumin and Retinal Study
Texas Tech University Health Sciences Center
- Location
- Lubbock, TX
- Eligibility basics
- Ages 40–89
- RecruitingHealthy volunteersEarly Phase 1
Assessment of Synaptic Density in MS
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersPhase 1
Oral Cannabidiol for Tobacco Cessation
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
Age-dependent Effects of Smoked and Oral Delta-9-THC
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
A Reduced-Intensity Conditioning Regimen (Cyclophosphamide, Pentostatin, Anti-thymocyte Globulin) Followed by Haploidentical Hematopoietic Stem Cell Transplant for the Treatment of Patients With Refractory or Recurrent…
City of Hope Medical Center
- Location
- Duarte, CA
- Eligibility basics
- Up to age 75
- RecruitingHealthy volunteersOvernight stay mentioned
Digital vs. Speculum Exams for PPROM
Washington University School of Medicine
- Location
- St Louis, MO
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteersPhase 1
PET Imaging Study of 64Cu-GRIP B for Patients Receiving CD19-directed CAR-T Therapy
Michael Randall
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Researching Economical Adjuvants to Cancer Therapy
Florida State University
- Location
- Tallahassee, FL
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersEarly Phase 1
Diffusion MRI in Heart Failure
Massachusetts General Hospital
- Location
- Charlestown, MA
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteersEarly Phase 1
PET Imaging Evaluation of [11C]SY08
Massachusetts General Hospital
- Location
- Charlestown, MA
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteersEarly Phase 1
Precision Dosing of Metformin in Youth With T2D
University of California, San Francisco
- Location
- Oakland, CA + 1 other US site
- Eligibility basics
- Ages 10–21
- RecruitingHealthy volunteersEarly Phase 1
Cardiometabolic Benefit of Reducing Iatrogenic Hyperinsulinemia Using Insulin Adjunctive Therapy in Type 1 Diabetes
Vanderbilt University Medical Center
- Location
- Nashville, TN
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersEarly Phase 1
RM1 Project 1 - tAN Naloxone
Medical University of South Carolina
- Location
- Charleston, SC
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
THC and CBD: A Controlled Human Study Probing a Harm Reduction Strategy
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersPhase 1
The Impact of Gestational Diabetes Mellitus on Cerebral Blood Flow and Cerebrovascular Function After Pregnancy
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–50 · Women only
- RecruitingHealthy volunteersEarly Phase 1
Sex Differences in the Vascular Effects of E-cigarette Use
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–24
- RecruitingHealthy volunteersEarly Phase 1
Role of Inflammation in Vascular Phenotype Associated With E-cigarette Use
University of Iowa
- Location
- Iowa City, IA + 1 other US site
- Eligibility basics
- Ages 18–24
- RecruitingHealthy volunteersPhase 1/Phase 2
Treatment of Relapsed/Refractory Intracranial Glioma in Patients Under 22 Years of Age
University of Miami
- Location
- Miami, FL
- Eligibility basics
- Ages 1–21
- RecruitingHealthy volunteersEarly Phase 1
Positron Emission Tomography (PET) Imaging of Cholesterol Trafficking: Clinical Evaluation of [18F]FNP-59 in Normal Human Subjects (Group 1)
Benjamin Viglianti
- Location
- Ann Arbor, MI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Positron Emission Tomography (PET) Imaging of Cholesterol Trafficking: Clinical Evaluation of [18F]FNP-59 in Normal Human Subjects (Groups 2, 3 & 4)
Benjamin Viglianti
- Location
- Ann Arbor, MI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersOvernight stay mentioned
Dietary Intervention to Mitigate Adverse Consequences of Night Work
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersEarly Phase 1
Metformin and Muscle Recovery
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersPhase 1
S-Nitrosylation (SNO) Therapy During Autologous Blood Transfusion
James Reynolds
- Location
- Cleveland, OH
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteersEarly Phase 1
An fMRI Investigation of the Effects of IV Lidocaine on Tinnitus
D. Bradley Welling, MD, PhD
- Location
- Boston, MA
- Eligibility basics
- Ages 18+
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.