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.
4,995 recruiting studiesSource: ClinicalTrials.gov, refreshed October 27, 2026How we list studies
More recruiting studies (pay not posted)
- RecruitingHealthy volunteersPhase 1
Validation of Oxygen Nanosensor in Mitochondrial Myopathy
Children's Hospital of Philadelphia
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersEarly Phase 1
The Use of Near-Infrared Fluorescence Cholangiography With Indocyanine Green (ICG) in the Work Up of Neonatal Cholestasis
University of Alabama at Birmingham
- Location
- Birmingham, AL
- Eligibility basics
- Ages 0 mo–4 mo
- RecruitingHealthy volunteersPhase 1/Phase 2
Use of Hyperpolarized Xenon Gas for Lung Imaging in Children and Adults
Children's Hospital Medical Center, Cincinnati
- Location
- Cincinnati, OH
- Eligibility basics
- Ages 6+
- RecruitingHealthy volunteersEarly Phase 1
Effect of C-peptide on Hypoglycemic Counterregulation
University of Cincinnati
- Location
- Cincinnati, OH
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteersPhase 1
Acute Effects of Oral Nicotine Pouches
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersEarly Phase 1
Localizing Epileptic Networks Using MRI and iEEG
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Spinal Cord Injury Neuroprotection With Glyburide
Francis Farhadi
- Location
- Lexington, KY
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersEarly Phase 1
Vascular Effects of High-Salt After Preeclampsia
Anna Stanhewicz, PhD
- Location
- Iowa City, IA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteersPhase 1
Evaluation of Single Dosing With Two F/TAF Tablets Among Healthy Volunteers
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Anxiety During Abstinence in AUD
Columbia University
- Location
- New York, NY
- Eligibility basics
- Ages 21–55
- RecruitingHealthy volunteersEarly Phase 1
Intermittent Visual Perturbations to Enhance Balance Training
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersEarly Phase 1
The Kidney's Response to Exercise in Heat, and the Impact of Vitamin B3 on This Response
Beth Israel Deaconess Medical Center
- Location
- Boston, MA + 1 other US site
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteersPhase 1/Phase 2
Molecular Imaging of NET Using [C-11]MRB-PET in MS
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteersPhase 1
Exploration of an Online Education Program to Support Caregivers' Knowledge Transfer
Texas Christian University
- Location
- Fort Worth, TX
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
PET Brain Imaging in Multiple Sclerosis, Alzheimer's Disease, and Other Neurological and Neuropsychiatric Diseases
Brigham and Women's Hospital
- Location
- Boston, MA
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteersEarly Phase 1
Insulin Regulation of Lipolysis and Lipolysis Proteins
Mayo Clinic
- Location
- Rochester, MN
- Eligibility basics
- Ages 18–55
- RecruitingHealthy volunteersEarly Phase 1
Identification of Critical Thermal Environments for Aged Adults
Penn State University
- Location
- University Park, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Biologic Therapy to Prevent Osteoarthritis After ACL Injury
University of California, Los Angeles
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteersPhase 1/Phase 2
Linaclotide for Colonoscopy Bowel Prep
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersOvernight stay mentioned
Nighttime Synchrony of Your Nutrition and Circadian Health
University of Utah
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 18–35
- RecruitingHealthy volunteersEarly Phase 1
PET Image in PAH Patients
Stephen Y. Chan
- Location
- Pittsburgh, PA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteersPhase 1
Home-based Vision Therapy
VA Office of Research and Development
- Location
- Cleveland, OH
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1
Effect of Cannabis on Cigarette Use Behavior
Johns Hopkins University
- Location
- Baltimore, MD
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteersEarly Phase 1
Opioid-Sparing and Pain-Reducing Properties of Syntocinon: A Dose-Effect Determination
University of Florida
- Location
- Gainesville, FL
- Eligibility basics
- Ages 21–45
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.