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
Effects of Miricell Supplementation on Biomarkers of Healthy Aging and Autophagy
Nutraland USA, Inc.
- Location
- Canfield, OH
- Eligibility basics
- Ages 40–70
- RecruitingHealthy volunteers
The Impact of Enhanced Music & Natural Visuals on Emotional Health
soundBrilliance LLC
- Location
- Fort Collins, CO + 2 other US sites
- Eligibility basics
- Ages 13+
- RecruitingHealthy volunteers
Exablate for LIFU Neuromodulation in Patients With Opioid Use Disorder (OUD) and/or Other Substance Use Disorders (SUDs)
InSightec
- Location
- Baltimore, MD + 2 other US sites
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
How's Your Balance?
RxFunction Inc.
- Location
- Saint Paul, MN
- Eligibility basics
- Ages 20+
- RecruitingHealthy volunteers
Aptis PRUJ Prosthesis for the Treatment of Patients With Proximal Radial Ulna Joint Disorders.
Aptis Medical
- Location
- Carmel, IN + 5 other US sites
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteers
Crownlands Observing Progression With Neurons Study
Crownlands
- Location
- Germantown, MD
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteers
A Study to Determine the Effects of ENDS Flavor Availability on Abstinence Within Smokers
RAI Services Company
- Location
- Maitland, FL + 6 other US sites
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
AI-Enabled Direct-from-ECG Ejection Fraction (EF) Severity Assessment Using COR ECG Wearable Monitor
Peerbridge Health, Inc
- Location
- Orange, CA + 7 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Pornography Abstinence and Nocturnal Erections in Adult Men
Efforia, Inc
- Location
- New York, NY
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteers
The Effect of Rinsing on Ocular Inflammation and Symptoms in Patients With Dry Eye Disease
Rinsada
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
A Study on the Safety of an Investigational Chickenpox Vaccine, When Given to Healthy Children, 12 to 15 Months of Age
GlaxoSmithKline
- Location
- Huntington Park, CA + 14 other US sites
- Eligibility basics
- Ages 1–1
- RecruitingHealthy volunteersPhase 3
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine When Given to Healthy Children 12 to 15 Months of Age
GlaxoSmithKline
- Location
- Mobile, AL + 46 other US sites
- Eligibility basics
- Ages 1–1
- RecruitingHealthy volunteersPhase 3
A Study on the Immune Response and Safety of an Investigational Chickenpox Vaccine and a Marketed Measles, Mumps and Rubella Vaccine When Administered as Intramuscular Injection to Healthy Children 12 to 15 Months of Age
GlaxoSmithKline
- Location
- Tucson, AZ + 12 other US sites
- Eligibility basics
- Ages 1–1
- RecruitingHealthy volunteers
mTBI Identification and Monitoring Through Retinal Scanning
Rebiscan, Inc.
- Location
- Boston, MA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 2
Study to Evaluate the REMEDY SPECTRUM GV IM Spacer Nail in the Treatment of Ankle-Related Infections
OsteoRemedies, LLC
- Location
- Lansing, MI + 2 other US sites
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Non-invasive Liquid Biopsy Analysis of Epigenomics Signatures in Multiple Cancer Types
ClearNote Health
- Location
- San Diego, CA
- Eligibility basics
- Ages 21–80
- RecruitingHealthy volunteers
Identification of Breast Cancer in Breath Samples Using Trained Detection Dogs
SpotitEarly
- Location
- Totowa, NJ + 1 other US site
- Eligibility basics
- Ages 18+ · Women only
- RecruitingHealthy volunteers
Online Evaluation of the Diagnostic Accuracy of BlinkLab's Digital Assessments for Autism
Blinklab Limited
- Location
- Princeton, NJ
- Eligibility basics
- Ages 2–11
- RecruitingHealthy volunteers
A Study Evaluating the Impact of Regular FODMAP-targeting Digestive Enzyme Blend Use on Gastrointestinal Symptoms in Individuals With Self-Reported Bloating
Kiwi Health Inc
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Diagnosis of Abdominal Pain Using RNA Levels: The NATURAL Study
True Bearing Diagnostics, Inc.
- Location
- Washington D.C., DC
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Pupillometry in Identifying Risk of Postoperative Opioid-induced Respiratory Depression in Children Undergoing Tonsillectomy
NeurOptics Inc
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 3–17
- RecruitingHealthy volunteersPhase 2
A Study to Learn About mRNA Vaccines Against Influenza in Adults
Pfizer
- Location
- Mobile, AL + 14 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
A Study to Learn About the Safety, Tolerability, and Immunogenicity of a Fifth Dose of 6-Valent OspA-Based Lyme Disease Vaccine
Pfizer
- Location
- Worcester, MA + 10 other US sites
- Eligibility basics
- Ages 7+
- RecruitingHealthy volunteers
Ventral or Inguinal Hernia, Robotically Repaired With OviTex Mesh
Tela Bio Inc
- Location
- Mobile, AL + 2 other US sites
- Eligibility basics
- Ages 21+
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.