Healthy volunteers · Boulder, CO
Studies for healthy volunteers in Boulder, CO
14 recruiting studies have a site in Boulder.
14 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- 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
Cannabis Observations on Brain Waves, Retrieval, and Attention: Experiment 4
L. Cinnamon Bidwell
- Location
- Boulder, CO
- Eligibility basics
- Ages 21–40
- RecruitingHealthy volunteers
Biomarkers for Peripheral Circadian Clocks in Humans
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 17–35
- RecruitingHealthy volunteers
Pathophysiology of Circadian Rhythm Delayed Sleep Wake Phase Disorder
University of Colorado, Boulder
- Location
- Boulder, CO + 1 other US site
- Eligibility basics
- Ages 16–40
- RecruitingHealthy volunteers
Exercise Adherence and Cognitive Decline: Phase 2
University of Colorado, Boulder
- Location
- Boulder, CO + 1 other US site
- Eligibility basics
- Ages 45–65
- RecruitingHealthy volunteers
Studies of Human Inference Using On-line Testing
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Adipocyte-Derived Extracellular Vesicles, Weight Loss, and Endothelial Function
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
Inspiratory Muscle Strength Training for Lowering Blood Pressure and Improving Endothelial Function in Postmenopausal Women: Comparison With "Standard of Care" Aerobic Exercise
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 50+ · Women only
- RecruitingHealthy volunteers
Perceptual Influences From Smoking Cannabis: an Experimental Study
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
Passive Heat Therapy for Lowering Systolic Blood Pressure and Improving Vascular Function in Mid-life and Older Adults
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
Evaluation of SUMMIT BRUSH in Treatment of Blepharitis
University of Notre Dame
- Location
- Boulder, CO + 2 other US sites
- Eligibility basics
- Ages 18+
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.