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
OBPM_PANDA2026: Evaluation of the Performance and Safety of the Aktiia Periodic Optical Blood Pressure Monitoring Device
Aktiia SA
- Location
- Broomfield, CO
- Eligibility basics
- Ages 22–59
- RecruitingHealthy volunteers
Observational Pharmaco-Epidemiology Research & Analysis
Epividian
- Location
- Durham, NC
- Eligibility basics
- Ages 0 mo+
- RecruitingHealthy volunteers
Falcon Real World Evidence Registry
Exact Sciences Corporation
- Location
- Evanston, IL + 1 other US site
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteers
Identification and Validation of Blood-Based Biomarkers for Early Detection of Asymptomatic Lung Cancer in High-Risk Heavy Smokers
Everest Detection, Inc.
- Location
- Oklahoma City, OK
- Eligibility basics
- Ages 30–80
- RecruitingHealthy volunteers
Smart Baby Monitor Effects on Infant Sleep and Parent Well-being
Udisense DBA Nanit
- Location
- New York, NY
- Eligibility basics
- Ages 21+
- RecruitingHealthy volunteers
Observational, Non-Interventional Study Supporting Validation of eVO2peak Using Results in Patients Receiving Standard of Care Cardiopulmonary Exercise Tests (CPET)
Prolaio
- Location
- Scottsdale, AZ + 10 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effects of P24 on Postprandial Aminoacidemia
Amplifye
- Location
- Davis, CA
- Eligibility basics
- Ages 45–75
- RecruitingHealthy volunteers
Longevity Metrics AI/ML Development Study
Longevity Metrics, Inc.
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
100-Year Human Aging Study
Longevity Metrics, Inc.
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Human Observatory Study
Longevity Metrics, Inc.
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Health Ahead Comparative Effectiveness Study
William Brandenburg, MD
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Safety and Tolerability of an Ultra Absorbency Menstrual Tampon Compared to a Commercially Marketed Tampon
Lyv Life Inc. (dba: Cora)
- Location
- St. Petersburg, FL
- Eligibility basics
- Ages 18–49 · Women only
- RecruitingHealthy volunteers
Effects of Continuous Yogurt Intake on Immunomodulatory Function and Subjective Health Status in Healthy U.S. Adults
Meiji Co., Ltd.
- Location
- Chicago, IL
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
A Study to Test the AdaptDx Pro Agreement in Rod Intercept Time With the AdaptDx in Healthy Subjects With Normal Vision (FlashBack)
AdaptDx, Inc.
- Location
- San Diego, CA
- Eligibility basics
- Ages 22–49
- RecruitingHealthy volunteers
Modified P200TE Data Collection
Optos, PLC
- Location
- Louisville, KY
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteers
(CIRRUS-2023-1) CLINICAL CLIN Assessment of PathFinder 1.0 on the CIRRUS 6000 and the CIRRUS 5000
Carl Zeiss Meditec-Dublin CoCe
- Location
- Tucson, AZ + 4 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4
A Clinical Study to Evaluate the Efficacy and SPF of Two Test Materials According to an Adaptation of the Guidelines of the FDA Sunscreen Drug Products for Over-the-Counter Human Use
Good Molecules, LLC
- Location
- Winston-Salem, NC
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
A Prospective Controlled Study to Evaluate the Safety and Effectiveness of Thermage® FLX Radiofrequency Treatment
Bausch Health Americas, Inc.
- Location
- Sacramento, CA + 5 other US sites
- Eligibility basics
- Ages 30–60
- RecruitingHealthy volunteers
Data Collection of New Spectral CT Imaging Method
GE Healthcare
- Location
- Bethlehem, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Metatranscriptomic Markers of Colonic Neoplasia
Viome
- Location
- Bothell, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Women's Hormonal and Metabolic Wellbeing Study
Daily Nouri
- Location
- San Francisco, CA
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Development of an Algorithm to Detect Pulmonary Hypertension Using an Electronic Stethoscope
Eko Devices, Inc.
- Location
- Providence, RI
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Detecting Pulmonary Hypertension With the Eko CORE 500 Digital Stethoscope
Eko Devices, Inc.
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
A Phase 2 Safety, Tolerability, PK, and Efficacy Study of CS-1103 Following Fentanyl Challenge With Naloxone Blockade
Clear Scientific, Inc.
- Location
- Glendale, CA
- Eligibility basics
- Ages 18–55
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.