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 volunteers
Studying the PAGODA Algorithm for Chemotherapy Dose Changes to Prevent Unplanned Treatment Delays
Alliance for Clinical Trials in Oncology
- Location
- Colorado Springs, CO + 350 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
American Lung Association (ALA) Lung Health Cohort
Johns Hopkins University
- Location
- Denver, CO + 26 other US sites
- Eligibility basics
- Ages 25–35
- RecruitingHealthy volunteers
Clinical Decision Support to Increase Use of Medications for Opioid Use Disorder
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 12–89
- RecruitingHealthy volunteersPhase 4
Cyclic vs. Constant Estradiol: Regimens' Effects on Brain Health
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 38–60 · Women only
- RecruitingHealthy volunteers
UPURS Trial for Patient-centered Management of Symptomatic Obstructing Stones
University of California, San Francisco
- Location
- Aurora, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Multi-Site Detection of Barrett's Esophagus in Patients Without Chronic GERD Symptoms
Case Comprehensive Cancer Center
- Location
- Aurora, CO + 4 other US sites
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteersPhase 3
Building Adaptive School-based Interventions for Caries
University of Pennsylvania
- Location
- Glenwood Springs, CO
- Eligibility basics
- Ages 5–13
- RecruitingHealthy volunteersPhase 2
Parenting in 2 Worlds Multisite Trial
Arizona State University
- Location
- Denver, CO + 3 other US sites
- Eligibility basics
- Ages 12+
- RecruitingHealthy volunteers
Friedreich Ataxia Global Clinical Consortium UNIFIED Natural History Study
Friedreich's Ataxia Research Alliance
- Location
- Denver, CO + 8 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
HealthyTogether: RCT of a Dyadic Weight Management Intervention
VA Office of Research and Development
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Pre- and Post-operative TEG Indices in Patients With or Without Adenocarcinoma Undergoing Surgical Resection
University of Colorado, Denver
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18–99
- RecruitingHealthy volunteers
ASSESS ALL ALS Study
St. Joseph's Hospital and Medical Center, Phoenix
- Location
- Aurora, CO + 35 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
PREVENT ALL ALS Study
St. Joseph's Hospital and Medical Center, Phoenix
- Location
- Aurora, CO + 30 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Registry of Asthma Characterization and Recruitment 3 (RACR3)
National Institute of Allergy and Infectious Diseases (NIAID)
- Location
- Aurora, CO + 4 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteersPhase 4
Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis
VA Office of Research and Development
- Location
- Aurora, CO + 8 other US sites
- Eligibility basics
- Ages 40+
- RecruitingHealthy volunteers
Novel Couple-Based Mindfulness Intervention for Metastatic Colorectal Cancer
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–85
- RecruitingHealthy volunteersPhase 4
Etonogestrel Implant as Emergency Contraception
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Distinguishing Alcohol Intoxication, Cannabis Intoxication and Co-intoxication Using Electroencephalography (EEG)
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
PPMI Clinical - Establishing a Deeply Phenotyped PD Cohort
Michael J. Fox Foundation for Parkinson's Research
- Location
- Aurora, CO + 29 other US sites
- Eligibility basics
- Ages 30+
- RecruitingHealthy volunteers
Effects of GLP-1 RAs on Human Lactation Outcomes
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Any age listed · Women only
- RecruitingHealthy volunteersPhase 2
Convergent Mechanisms Underlying Reprometabolic Syndrome in Women
University of Colorado, Denver
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 18–38 · Women only
- RecruitingHealthy volunteersPhase 2/Phase 3
Focusing on the Menopausal Transition to Improve Mid-Life Women's Health
University of Colorado, Denver
- Location
- Aurora, CO + 2 other US sites
- Eligibility basics
- Ages 45–55 · Women only
- RecruitingHealthy volunteers
Deep Functional Phenotyping of the ALA Lung Health Cohort
Johns Hopkins University
- Location
- Denver, CO + 11 other US sites
- Eligibility basics
- Ages 25–35
- RecruitingHealthy volunteers
Comprehensive HHT Outcomes Registry of the United States (CHORUS)
Cure HHT
- Location
- Aurora, CO + 15 other US sites
- Eligibility basics
- Any age listed