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
Study to Investigate Vagus Nerve Stimulation to Augment Executive Function in Healthy and Cognitively Impaired Populations
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Updated Diagnostic Cortisol Values for Adrenal Insufficiency
Montefiore Medical Center
- Location
- The Bronx, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Role of Flavor in the Substitutability of E-cigarettes for Combustible Cigarettes Among Persistent Smokers
Abramson Cancer Center at Penn Medicine
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersPhase 2
Computerized Cognitive Behavioral Therapies for Suicide Prevention and Depression
VA Eastern Colorado Health Care System
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Speech Motor Learning and Retention (Aim 1)
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Speech Motor Learning and Retention (Aim 2)
Yale University
- Location
- New Haven, CT
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteersPhase 2/Phase 3
Comparison of Early Proton Pump Inhibitor Initiation Versus Usual Care on Acute Kidney Injury in Hemorrhagic Shock Patients
The University of Texas Health Science Center, Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Social Isolation and Aging in Schizophrenia
Icahn School of Medicine at Mount Sinai
- Location
- Hartford, CT
- Eligibility basics
- Ages 40–70
- RecruitingHealthy volunteers
The Will Erwin Headache Research Center - Cluster Headache Study
The University of Texas Health Science Center, Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Endoscopic Ultrasound-Guided Celiac Plexus Neurolysis (EUS-CPN) for Chronic Pancreatitis
Indiana University
- Location
- Indianapolis, IN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Gastric Per-Oral Endoscopic Myotomy (G-POEM) for the Treatment of Gastroparesis
Indiana University
- Location
- Indianapolis, IN
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Chardonnay Marc and Vascular Response
University of California, Davis
- Location
- Davis, CA
- Eligibility basics
- Ages 30–50 · Men only
- RecruitingHealthy volunteers
Impact of Heart Rate Variability Modulation on Stress Management Among Physicians
Michelle Thompson
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Evaluating Use of Topical Imipramine and Amitriptyline in Reducing Ultraviolet B Light-Induced Redness in Patients With Rosacea
Wright State University
- Location
- Fairborn, OH
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effects of a Non-nutritive Sweetener Reduction Intervention in Pregnancy and Lactation on Maternal and Infant Outcomes
George Washington University
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Greater Houston Area Pediatric Bipolar Registry
The University of Texas Health Science Center, Houston
- Location
- Houston, TX
- Eligibility basics
- Ages 6–17
- RecruitingHealthy volunteers
Vaginal Changes After CO2 Laser
University of California, Irvine
- Location
- Irvine, CA
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
Near-InfraRed Spectroscopy of Auricular Stimulation
University of Pittsburgh
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Biobank for Cholestatic Liver Diseases.
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteersPhase 4
Prevention of Postop Atrial Fibrillation Through Intraoperative Inducibility of Atrial Fibrillation and Amiodarone Treatment
Stanford University
- Location
- Stanford, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Storage Facility for Tissues Obtained From Patients With Malignant Melanoma
Ohio State University Comprehensive Cancer Center
- Location
- Columbus, OH
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Characterization of Biliary Cell-derived Organoids From Bile of PSC and Non-PSC Patients
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
Prevent Cancer- Greenville
Prisma Health-Upstate
- Location
- Greenville, SC
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Impact of Dietary Phosphate Excess on Exercise Capacity and Visceral Adiposity
University of Texas Southwestern Medical Center
- Location
- Dallas, TX
- Eligibility basics
- Ages 18–80
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.