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
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
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.