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 volunteersPhase 3
A Study to Assess the Safety, Tolerability, and Immunogenicity of 3 Lots of a Multivalent Pneumococcal Conjugate Vaccine Administered to Adults
Pfizer
- Location
- Birmingham, AL + 36 other US sites
- Eligibility basics
- Ages 18–49
- RecruitingHealthy volunteersPhase 3
A Study to Learn About a Clostridioides Difficile Vaccine in People 65 Years of Age and Older
Pfizer
- Location
- Athens, AL + 138 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
Driving Time and Facial Skin Hydration Asymmetry in Florida Drivers
IAS Skin Care
- Location
- Orlando, FL
- Eligibility basics
- Ages 25–65 · Women only
- RecruitingHealthy volunteers
Clinical Evaluation of a Multi-functional Beauty Device on Cosmetic Skin Outcomes
APR Co., Ltd.
- Location
- Baltimore, MD
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteersPhase 3
A Study to Evaluate the Immune Response and Safety of a Vaccine Against Influenza in Adults 18-64 Years of Age
GlaxoSmithKline
- Location
- Glendale, AZ + 11 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteers
Contraceptive Efficacy Study of Ovaprene
Daré Bioscience, Inc.
- Location
- Phoenix, AZ + 3 other US sites
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Effect of a Dietary Supplement Versus Placebo on Serum PFAS Levels in Male Firefighters
Cambiotics ApS
- Location
- Chicago, IL
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteers
Observational Assessment of Skin Appearance Changes During PRX S Cosmetic Treatment in Participants With Acne-Prone Skin
WiQo S.p.A.
- Location
- Leawood, KS + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
Fertilo In Vitro Research Study and Trial
Gameto, Inc.
- Location
- Clovis, CA + 15 other US sites
- Eligibility basics
- Ages 18–35 · Women only
- RecruitingHealthy volunteers
BoxX-NoAF Clinical Trial
AtriCure, Inc.
- Location
- Scottsdale, AZ + 30 other US sites
- Eligibility basics
- Ages 65+
- RecruitingHealthy volunteers
A Study to Assess the Efficacy of an Experimental Mouthwash Used With a Marketed Whitening Toothpaste on Stain Build-up
HALEON
- Location
- Melbourne, FL
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Integration of the Oura Ring and Maven Clinic Among Women Who Are Trying to Conceive
Ouraring Inc.
- Location
- New York, NY
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
ProACT Post-Approval Study
Uromedica
- Location
- Los Angeles, CA + 13 other US sites
- Eligibility basics
- Ages 50+ · Men only
- RecruitingHealthy volunteers
Comparative Study of the Tomey FT-1000, and Goldmann Applanation Tonometer (GAT)
Tomey Corporation
- Location
- Jacksonville, FL
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
A Study to Test the Repeatability and Reproducibility in Rod Intercept Time Within the AdaptDx Pro in Healthy Subjects With Normal Vision (FlashForward)
AdaptDx, Inc.
- Location
- Silverdale, WA
- Eligibility basics
- Ages 22–49
- RecruitingHealthy volunteers
Impact of Two Iron Formulations on Iron Biomarkers and Quality of Life
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
Lot-to-lot Consistency Study of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From 2 Months of Age
Sanofi
- Location
- Fayetteville, AR + 13 other US sites
- Eligibility basics
- Ages 1 mo–2 mo
- RecruitingHealthy volunteers
Efficacy of Qualia Testosterone+ on Testosterone Levels in Adult Males
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 28–65 · Men only
- RecruitingHealthy volunteers
The Impact of Qualia Vitamin C+ on Individuals With Suboptimal and Adequate Vitamin C Levels
Qualia Life Sciences
- Location
- Carlsbad, CA
- Eligibility basics
- Ages 25–75
- RecruitingHealthy volunteers
Positron Emission Tomography/Computed Tomography (PECT/CT) Double-Scanning Study
GE Healthcare
- Location
- Stanford, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Study to Assess Deucravacitinib Safety in Pregnancy
Bristol-Myers Squibb
- Location
- La Jolla, CA
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteers
Observational Study of Decentralized Urine Optical Interaction Patterns Associated With Environmental Microplastic and Nanoplastic Exposure
Ecotera Health LLC
- Location
- Birmingham, AL + 50 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparison of ACUVUE® OASYS MAX 1-Day Multifocal and DAILIES® AquaComfort Plus® Multifocal
Johnson & Johnson Vision Care, Inc.
- Location
- Roswell, GA + 9 other US sites
- Eligibility basics
- Ages 40–70
- RecruitingHealthy volunteers
Evaluation of Approved Contact Lenses (CR-6657)
Johnson & Johnson Vision Care, Inc.
- Location
- Franklin Park, IL + 3 other US sites
- Eligibility basics
- Ages 18–39
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.