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
Study of Placental Function in Healthy and Pathological Pregnancies
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Effects of High Altitude on AMPK Activation
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
Pilot Study of Suction as a Mechanism of IUD Expulsion With Concomitant Menstrual Cup Use
University of Colorado, Denver
- Location
- Denver, CO
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingHealthy volunteers
North American Mitochondrial Disease Consortium Patient Registry and Biorepository (NAMDC)
Columbia University
- Location
- Aurora, CO + 15 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Maternal Newborn Health Registry
NICHD Global Network for Women's and Children's Health
- Location
- Aurora, CO + 7 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy (CADASIL) Study
University of Wisconsin, Madison
- Location
- Denver, CO + 9 other US sites
- Eligibility basics
- Ages 18+
- 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
Effects of Physical and Psychosocial Stress on Functional Hypothalamic Amenorrhea in Exercising Women
University of Colorado, Colorado Springs
- Location
- Colorado Springs, CO
- Eligibility basics
- Ages 18–35 · Women only
- RecruitingHealthy volunteers
Impact of Circulating and Tissue-specific Lipids on Vascular Function and Insulin Sensitivity in Chronic Night Shift Workers
Colorado State University
- Location
- Fort Collins, CO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Effect of High-Intensity Exercise to Attenuate Cognitive Function Limitations and Train Exercise Habits in Older People Living With HIV
University of Alabama at Birmingham
- Location
- Aurora, CO + 1 other US site
- Eligibility basics
- Ages 50–80
- RecruitingHealthy volunteers
Physiology of Long COVID-19 and the Impact of Cardiopulmonary Rehabilitation on Quality-of-Life and Functional Capacity
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Educate and Improve Underserved Populations' Uptake and Completion of the HPV Vaccine
University of Colorado, Denver
- Location
- Denver, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Blood Flow Restriction Training in Patients With Lower Extremity Fractures
Denver Health and Hospital Authority
- Location
- Denver, CO
- Eligibility basics
- Ages 18–100
- RecruitingHealthy volunteers
Endothelial Dysfunction After SCI
Craig Hospital
- Location
- Englewood, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Genesis Electrical Impedance Tomography (EIT): A Preliminary Study
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 0 mo–40
- RecruitingHealthy volunteers
Health Without Barriers/Salud Sin Barreras
Colorado State University
- Location
- Durango, CO
- Eligibility basics
- Ages 11–19
- RecruitingHealthy volunteers
Cold and Heat Investigation to Lower Levels of Depression
Barry Sandler
- Location
- Edwards, CO
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteers
Alcohol and Sexual Communication Among Couples in the Laboratory
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
The Human Trisome Project
University of Colorado, Denver
- Location
- Denver, CO
- Eligibility basics
- Ages 6 mo–89
- RecruitingHealthy volunteers
Neurophysiologic Biomarkers in Rett Syndrome
Children's Hospital of Philadelphia
- Location
- Aurora, CO + 5 other US sites
- Eligibility basics
- Ages 1–18 · Women only
- RecruitingHealthy volunteersPhase 2
Acute Equol Supplementation and Vascular Function in Women With and Without CKD
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 50–69 · Women only
- RecruitingHealthy volunteers
MIRA CONNECT Study
University of Colorado, Denver
- Location
- Aurora, CO
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
Ultrasound Investigation Into Swimming Induced Pulmonary Edema in Open Water Swimming Athletes
Rocky Vista University, LLC
- Location
- Parker, CO
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Specialty Compared to Oncology Delivered Palliative Care for Patients With Acute Myeloid Leukemia
Massachusetts General Hospital
- Location
- Denver, CO + 19 other US sites
- Eligibility basics
- Ages 18–120