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.
4,991 recruiting studiesSource: ClinicalTrials.gov, refreshed October 28, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteers
Direct to Patient Minimal Risk Biospecimen and Data Collection Research
Joined Bio
- Location
- Lexington, MA
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Acellular Dermal Matrix Investigation in Breast Reconstruction
RTI Surgical
- Location
- Little Rock, AR + 11 other US sites
- Eligibility basics
- Ages 22+ · Women only
- RecruitingHealthy volunteers
Mobility Performance in Daily Activities Among Children Wearing Spectacle Lenses
SightGlass Vision, Inc.
- Location
- Glendale, AZ
- Eligibility basics
- Ages 6–12
- RecruitingHealthy volunteers
Children's Viewing Behavior
SightGlass Vision, Inc.
- Location
- Bloomington, IN
- Eligibility basics
- Ages 7–14
- RecruitingHealthy volunteersPhase 3
REVEAL Study - Diagnostic Testing for PTSD Using the Senseye Diagnostic Tool
Senseye, Inc.
- Location
- Aurora, CO + 2 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
ALPCO Calprotectin CLIA Assay - Measurement of Calprotectin Levels in Human Stool
American Laboratory Products Company
- Location
- Miami, FL + 1 other US site
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
A Study Evaluating Oral-Health-Related Quality of Life and Treatment Patterns Among Dentin Hypersensitivity Sufferers
HALEON
- Location
- Las Vegas, NV
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Generative AI Plan for Care Lab Study
Fitbit LLC
- Location
- Mountain View, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Evaluation of Fractional Ablative Laser Treatment for Skin Conditions
Sciton
- Location
- Boca Raton, FL
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
iVS-1 Probiotic Intervention Targeting Biological Aging in Midlife Adults
Synbiotic Health
- Location
- New Port Richey, FL
- Eligibility basics
- Ages 40–75
- RecruitingHealthy volunteersPhase 4
Comparing Sarecycline and Doxycycline Effects on the Skin and Gut Bacteria in Acne.
Integrative Skin Science and Research
- Location
- Sacramento, CA
- Eligibility basics
- Ages 9+
- RecruitingHealthy volunteers
Rezdiffra Pregnancy and Lactation Registry
Madrigal Pharmaceuticals, Inc.
- Location
- West Conshohocken, PA
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteers
Safety and Effectiveness Evaluation of the High-intensity Focused Ultrasound Device for Lifting Lax Submental and Neck Tissue
CLASSYS Inc.
- Location
- Los Angeles, CA + 4 other US sites
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteersPhase 3
A Study to Evaluate Tradipitant on Treating Nausea and Vomiting Induced by GLP-1R Agonist Use
Vanda Pharmaceuticals
- Location
- Los Angeles, CA + 2 other US sites
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Development of a Database to Investigate Digital and Blood-Based Biomarkers and Their Relationship to Tau and Amyloid PET Imaging in Older Participants Who Are Cognitively Normal (CN), Have Mild Cognitive Impairment…
GAP Innovations, PBC
- Location
- Atlantis, FL + 18 other US sites
- Eligibility basics
- Ages 60–90
- RecruitingHealthy volunteers
Examining Olive Oil Extract on Knee Comfort and Function
Applied Food Sciences Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 40–75
- RecruitingHealthy volunteers
Effects of Amylopectin Chromium Blend on Whole-Body Protein Kinetics and Glucose in Peri/Post-Menopausal Women
Nutrition 21, Inc.
- Location
- Canfield, OH
- Eligibility basics
- Ages 40–70 · Women only
- RecruitingHealthy volunteers
Effera Dose Response: Women's Health
Helaina Inc.
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Smartphone Twelve-Lead ECG Utility In ST-Elevation Myocardial Infarction II
AliveCor
- Location
- Rochester, MN + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Glycemic Metrics and Patterns in People With and Without Prediabetes
Abbott Diabetes Care
- Location
- Bend, OR
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
AI-CARE: Artificial Intelligence for Cardiovascular Analysis and Risk Evaluation
Aiatella Oy
- Location
- Norfolk, VA
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
Decentralized Study to Evaluate a Dietary Supplement for Episodes of Mild Acute Stress in Healthy People
PLT Health Solutions
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
Evaluation of the Medentum Diagnostik Platform for Pediatric ENT Conditions and Asthma
Medentum Innovations
- Location
- Tuscon, AZ
- Eligibility basics
- Ages 3–17
- RecruitingHealthy volunteers
Comparison of the Effects of Oral Hygiene Regimens on Clinical, Immunomodulatory, and Microbial Outcomes and Oral Tolerance in People With Gingivitis
Kenvue Brands LLC
- Location
- Somerville, MA
- Eligibility basics
- Ages 18–60
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.