Healthy volunteers · Colorado
Studies for healthy volunteers in Colorado
183 studies have at least one recruiting site in Colorado. 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.
183 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
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.