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
The Effects of Daily Supplementation of a Soluble Fiber on the Fecal Microbiota in Volunteers.
Roquette Freres
- Location
- Addison, IL
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
A Randomized Comparison of Stage-Based Care Versus Risk Factor-Based Care for Prevention of Cardiovascular Events
Cleerly, Inc.
- Location
- Chandler, AZ + 121 other US sites
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteersPhase 3
A Study of COVID-19 Vaccine(s) in Children and Adults
BioNTech SE
- Location
- Homestead, FL + 13 other US sites
- Eligibility basics
- Ages 5+
- RecruitingHealthy volunteers
Pivotal Trial for an Automated AI-based System for Detection of Diabetic Retinopathy
Digital Diagnostics, Inc.
- Location
- Jacksonville, FL
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
Multi-strain Probiotic Supplement for Digestive Comfort and Well-being in Healthy Women
Daily Nouri
- Location
- San Francisco, CA
- Eligibility basics
- Ages 25–45 · Women only
- RecruitingHealthy volunteersPhase 2
Safety and Efficacy of wSp Vaccine in Young Children
Serum Life Science Europe GmbH
- Location
- Pittsford, NY + 3 other US sites
- Eligibility basics
- Ages 5 mo–7 mo
- RecruitingHealthy volunteers
Singula Phase 0.1 Primary Care Pilot
Singula Health, Inc.
- Location
- Mount Kisco, NY
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
A Recovery and Lifespan Study Using INTERCEPT Red Blood Cells Prepared Using the INTERCEPT Blood System for RBCs With AS-1
Cerus Corporation
- Location
- Norfolk, VA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Wearable Photoplethysmography for Non-invasive Hydration Assessment
PepsiCo Global R&D
- Location
- Frisco, TX + 1 other US site
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Hydration & Female Life Stages
PepsiCo Global R&D
- Location
- Bradenton, FL + 1 other US site
- Eligibility basics
- Ages 18–60 · Women only
- RecruitingHealthy volunteers
Dozee Validation for Contactless Heart Rate and Respiration Monitoring in Clinical Settings
Turtle Shell Technologies Pvt. Ltd.
- Location
- Lake Jackson, TX
- Eligibility basics
- Ages 22–100
- RecruitingHealthy volunteers
The Effects of Tyrosol and Creatine on Exercise Performance and Cognition in Healthy Adults
Applied Science & Performance Institute
- Location
- Tampa, FL
- Eligibility basics
- Ages 20–55 · Men only
- RecruitingHealthy volunteers
Identifying Patterns in the Breath of Individuals With Breast Cancer
Breathe BioMedical Inc
- Location
- Washington D.C., DC + 2 other US sites
- Eligibility basics
- Ages 40–74 · Women only
- RecruitingHealthy volunteersPhase 3
A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
GlaxoSmithKline
- Location
- Anniston, AL + 130 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
An Open-Label, Two-Arm Pilot Study of the Tolerability, Consumer Acceptability, and Exploratory Well-Being Outcomes of a Multi-Ingredient Protein Formula in Two Flavors in Healthy Adults
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
Cholate Clearance in Fontan and Heart Failure
HepQuant, LLC
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
The Effects of Quercefit® and Ubiqsome™ in Mitigating Inflammation and Promoting Metabolic Health
Applied Science & Performance Institute
- Location
- Tampa, FL
- Eligibility basics
- Ages 50–75
- RecruitingHealthy volunteers
This Study Evaluates the ALPCO Syphilis-T and Syphilis-NT CLIA Kits for Detecting Syphilis Antibodies in Serum and Plasma. Samples From At-risk, HIV-positive, Pregnant, and Healthy Individuals Will Assess Assay…
American Laboratory Products Company
- Location
- Lancaster, CA + 5 other US sites
- Eligibility basics
- Ages 13+
- RecruitingHealthy volunteers
Making Connections Thru Music
Hopeful Aging
- Location
- Winchester, MA + 1 other US site
- Eligibility basics
- Ages 18–103
- RecruitingHealthy volunteers
The Happiest Baby, Inc. SNOO Postmarket Surveillance Study
Happiest Baby, Inc.
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
AVAVA MIRIA General Use
AVAVA, Inc.
- Location
- Waltham, MA
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
A Study to Train a Machine Learning Algorithm for an Evaluation of the Use of Biometric Data Captured at the Wrist for the Identification of Acute Opioid Use Events and the Quantification of Opioid Withdrawal in Opioid…
OpiAID
- Location
- Wilmington, NC
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
Within-Subject Comparison of Adipose Tissue Viability Following Liposuction
Apyx Medical
- Location
- Concord, OH + 1 other US site
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteersPhase 4
Efficacy of M640 in Acute Lumbosacral Musculoskeletal Conditions.
Primus Pharmaceuticals
- Location
- Clearwater, FL + 7 other US sites
- 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.