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 volunteersPhase 1
Pharmacogenetics of Response to GLP1R Agonists
University of Maryland, Baltimore
- Location
- Lancaster, PA
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersPhase 1
A Phase 1 Study of 99mTc-p5+14 in Healthy Volunteers and Patients With AL or ATTR Systemic Amyloidosis
University of Tennessee Graduate School of Medicine
- Location
- Knoxville, TN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Mifepristone vs Misoprostol
Montefiore Medical Center
- Location
- The Bronx, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Effects of Psilocybin on Electrophysiology and the Dynamic Content of Thought
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersOvernight stay mentioned
The Osteoarthritis Prevention Study
Wake Forest University
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 50+ · Women only
- RecruitingHealthy volunteersPhase 1
Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females
University of Connecticut
- Location
- Storrs, CT
- Eligibility basics
- Ages 45–70 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Hyperemesis Gravidarum Risk Reduction With Metformin
University of Southern California
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteersPhase 1
Safety, Tolerability, and Bioeffects of Alirocumab in Non-treatment Seeking Heavy Drinkers
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
- Location
- Bethesda, MD
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersEarly Phase 1
PK/PD of Oral and Vaporized Delta-9-Tetrahydrocannabinol (THC) in Older Adults
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteersPhase 1
Thymalfasin (Thymosin Alpha 1; Ta1) as an Enhancer of Vaccine Response Among Older Adults Receiving Booster Doses of COVID-19 Vaccine
The Methodist Hospital Research Institute
- Location
- Houston, TX
- Eligibility basics
- Ages 65–100
- RecruitingHealthy volunteersEarly Phase 1
Restructuring the Alpha-Gamma Code in Aging Vision
Boston University Charles River Campus
- Location
- Boston, MA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Evaluation of the Electronic Cigarette Withdrawal Syndrome
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersEarly Phase 1
Assistance Delivery and Muscle Coordination
The Catholic University of America
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 20–80
- RecruitingHealthy volunteersEarly Phase 1
Mechanistic Studies of Psilocybin in Headache Disorders
Yale University
- Location
- West Haven, CT
- Eligibility basics
- Ages 21–70
- RecruitingHealthy volunteersEarly Phase 1
Optic Nerve Head Strain in Non-glaucoma Subjects
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 30–90
- RecruitingHealthy volunteersPhase 1
Cabotegravir-Hormone PK/PD Interactions for HIV Prevention
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 19+
- RecruitingHealthy volunteersPhase 1
Investigating the Mechanisms of the Effects of Psilocybin on Visual Perception and Visual Representations in the Brain
University of California, Berkeley
- Location
- Berkeley, CA
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 1/Phase 2
Vasopressin and Pain Perception in the Brain
University of Maryland, Baltimore
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Autonomic Control of the Circulation and VDR
Milton S. Hershey Medical Center
- Location
- Hershey, PA
- Eligibility basics
- Ages 21–35
- RecruitingHealthy volunteersEarly Phase 1
JIT: Effect of Pain on DT in TMD
University of Minnesota
- Location
- Minneapolis, MN
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteersEarly Phase 1
Zynrelef vs Exparel: The Battle of Postoperative Pain Control After Robotic Sleeve Gastrectomy
Texas Tech University Health Sciences Center
- Location
- Lubbock, TX
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
Smart Olfaction App to Reduce Relapse
University of Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
New MRI Methods Applied to Heart Failure With Preserved Ejection Fraction (HFpEF)
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Breathing for Two: Inspiratory Muscle Strength Training for Supporting Healthy Blood Pressure in Pregnancy
University of Arizona
- Location
- Tucson, AZ
- Eligibility basics
- Ages 18–55 · Women only
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.