Location · Colorado
Clinical trials recruiting in Colorado
591 recruiting studies have at least one site in Colorado; 183 accept healthy volunteers. Studies that need a specific condition are included too, so check each listing.
Want the research companies that run paid Phase 1 studies for healthy volunteers? Paid clinical trial companies in Colorado.
591 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 4
Oral Contraceptive Pill (OCP) Pharmacogenomics
Yale University
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
SanaMente: A Peer-Led Program to Reduce Health Disparities in Rural Latino/a Communities
University of Colorado, Boulder
- Location
- Carbondale, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Protocol CAUSE-03 / CHEETAH
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Aurora, CO + 7 other US sites
- Eligibility basics
- Ages 6–17
- 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
Integrated Cancer Repository for Cancer Research
University of Nebraska
- Location
- Greenwood Village, CO + 41 other US sites
- Eligibility basics
- Ages 19–110
- RecruitingHealthy volunteers
UNderstanding the Causes Of Idiopathic Scoliosis Through the Longitudinal Analysis of Proteomic Markers: the UNCOIL Study
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 10–17
- RecruitingHealthy volunteers
Advanced SPinal Innovations With Robotics and Enabling Technology Registry
Boston Children's Hospital
- Location
- Aurora, CO + 6 other US sites
- Eligibility basics
- Ages 0 mo–21
- RecruitingHealthy volunteers
Childhood Cancer Survivor Study
St. Jude Children's Research Hospital
- Location
- Aurora, CO + 26 other US sites
- Eligibility basics
- Any age listed
- 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
Testing the Impact of the MOHR Follow-up Support
University of Colorado, Denver
- Location
- Aurora, CO + 5 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Exercise Adherence and Cognitive Decline: Phase 2
University of Colorado, Boulder
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 45–65
- RecruitingHealthy volunteers
The Society for Obstetric Anesthesia and Perinatology Research Network General Anesthesia Registry
Yale University
- Location
- Arvada, CO + 32 other US sites
- Eligibility basics
- Ages 15–55 · Women only
- RecruitingHealthy volunteers
SPIROMICS Study of Early COPD Progression (SOURCE)
University of Massachusetts, Worcester
- Location
- Denver, CO + 13 other US sites
- Eligibility basics
- Ages 30–55
- RecruitingHealthy volunteers
Influence of the Gut Microbiome on Blueberry Polyphenol Metabolites
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Mode of Exercise and Bone Biomarkers in Older Veterans
VA Office of Research and Development
- Location
- Aurora, CO
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteers
Genomic Predictors of Recurrent Pregnancy Loss
Yale University
- Location
- Aurora, CO + 8 other US sites
- Eligibility basics
- Ages 18–50
- RecruitingHealthy volunteers
Studies of Human Inference Using On-line Testing
University of Colorado, Boulder
- Location
- Boulder, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Effect of Weight Loss on Intermuscular Adipose Tissue (IMAT) Signaling
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Sex Differences in Cold-Induced Changes in Maximal Fat Oxidation
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 18–40
- RecruitingHealthy volunteers
Comparison of Patient-reported Pain After Initial Archwire Placement
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 12+
- RecruitingHealthy volunteers
Miniscrew Stability and Peri-implant Inflammation When Precoated K21 vs Ethanol Control
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 12+
- RecruitingHealthy volunteers
The Early and Late Contribution of Fasting and Postprandial Triglycerides on Newborn Subcutaneous and Intrahepatic Fat in Pregnancy
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 0 mo–39
- RecruitingHealthy volunteers
BeSMART Secure Storage Counseling in the Inpatient Setting
Vanderbilt University Medical Center
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18+