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Healthy volunteer studies in Denver, CO

38 studies at sites in and around Denver accept healthy volunteers — people without the condition being studied. Many studies pay participants for their time and travel; the amount is set by each study, so ask the study team.

Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection

RecruitingObservational studyHealthy volunteers welcome
  • AdventHealth Porter, Denver
Ages 40 to 75 · All sexes · Updated Oct 2, 2026 · NCT05334069

Observational Study of Decentralized Urine Optical Interaction Patterns Associated With Environmental Microplastic and Nanoplastic Exposure

RecruitingObservational studyHealthy volunteers welcome
  • Decentralized / At-Home Participation (U.S.), Denver
Ages 18 and older · All sexes · Updated Oct 1, 2026 · NCT07775495

A Clinical Trial of LY3962681 in Healthy Volunteers and in Patients With Parkinson's Disease

RecruitingPhase 1Healthy volunteers welcome
  • CenExel, Englewood · 6 mi away
Ages 30 to 80 · All sexes · Updated Oct 1, 2026 · NCT06565195

A Randomized Comparison of Stage-Based Care Versus Risk Factor-Based Care for Prevention of Cardiovascular Events

RecruitingHealthy volunteers welcome
  • St. Josephs (Intermountain Healthcare), Denver
Ages 55 and older · All sexes · Updated Sep 28, 2026 · NCT06112418

American Lung Association (ALA) Lung Health Cohort

RecruitingObservational studyHealthy volunteers welcome
  • National Jewish Health, Denver
Ages 25 to 35 · All sexes · Updated Sep 23, 2026 · NCT04543461

Connect for Cancer Prevention Study (Connect)

RecruitingObservational studyHealthy volunteers welcome
  • Kaiser Permanente Colorado, Denver
Ages 30 to 70 · All sexes · Updated Sep 17, 2026 · NCT04609072

Parenting in 2 Worlds Multisite Trial

RecruitingPhase 2Healthy volunteers welcome
  • Denver Indian Center, Denver
Ages 12 and older · All sexes · Updated Sep 8, 2026 · NCT06324318

The Vanguard Study: Testing a New Way to Screen for Cancer

RecruitingHealthy volunteers welcome
  • Kaiser Permanente-Franklin, Denver
Ages 45 to 75 · All sexes · Updated Sep 2, 2026 · NCT06995898

Friedreich Ataxia Global Clinical Consortium UNIFIED Natural History Study

RecruitingObservational studyHealthy volunteers welcome
  • University of Colorado, Denver
All ages · All sexes · Updated Sep 1, 2026 · NCT06016946

A Study to Evaluate AZD7760 Safety and Pharmacokinetics in Healthy Adults (Phase I) and Adults With End-stage Kidney Disease on Hemodialysis With a Central Venous Catheter (Phase IIa)

RecruitingPhase 1/2Healthy volunteers welcome
  • Research Site, Englewood · 6 mi away
Ages 18 to 55 · All sexes · Updated Aug 14, 2026 · NCT06749457

ARTFL LEFFTDS Longitudinal Frontotemporal Lobar Degeneration (ALLFTD)

RecruitingObservational studyHealthy volunteers welcome
  • University of Colorado Denver, Denver
Ages 18 and older · All sexes · Updated Jul 30, 2026 · NCT04363684

Motiva Implants® Post-Approval Study

RecruitingHealthy volunteers welcome
  • The Center for Cosmetic Surgery, Denver
Ages 22 and older · Women · Updated Jul 17, 2026 · NCT06938399

Deep Functional Phenotyping of the ALA Lung Health Cohort

RecruitingObservational studyHealthy volunteers welcome
  • National Jewish Health, Denver
Ages 25 to 35 · All sexes · Updated Jul 17, 2026 · NCT06177717

Testing the Impact of the MOHR Follow-up Support

RecruitingHealthy volunteers welcome
  • UCHealth Women's Integrated Services in Health (WISH), Denver
  • UCHealth Cherry Creek Medical Center, Denver
  • UCHealth Internal Medical Clinic - Lowry, Denver
Ages 18 and older · All sexes · Updated Jun 16, 2026 · NCT07569224

SPIROMICS Study of Early COPD Progression (SOURCE)

RecruitingObservational studyHealthy volunteers welcome
  • National Jewish Health, Denver
Ages 30 to 55 · All sexes · Updated Jun 3, 2026 · NCT05033990

HDClarity: a Multi-site Cerebrospinal Fluid Collection Initiative to Facilitate Therapeutic Development for Huntington's Disease

RecruitingObservational studyHealthy volunteers welcome
  • Cenexel, Englewood · 6 mi away
Ages 11 to 75 · All sexes · Updated Apr 27, 2026 · NCT02855476

Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer

RecruitingObservational studyHealthy volunteers welcome
  • Department of Medicine-Gastroenterology, Denver Veterans Affairs Medical Center, University of Colorado Hospital, Denver
Ages 18 to 49 · All sexes · Updated Apr 24, 2026 · NCT05732623

A Global Study of the PETAL Consortium

RecruitingObservational studyHealthy volunteers welcome
  • University of Colorado, Denver
Ages 18 and older · All sexes · Updated Apr 9, 2026 · NCT06067347

PPROM Registry (Preterm Premature Rupture of Membranes)

RecruitingObservational studyHealthy volunteers welcome
  • Www.Aapprom.Org/the-Registry, Denver
Ages 14 to 55 · Women · Updated Mar 16, 2026 · NCT02997345

An Investigation of Attentional and Inhibitory Processes During Active Visual Search in Humans

RecruitingHealthy volunteers welcome
  • University of Colorado Denver, Denver
Ages 18 to 65 · All sexes · Updated Feb 20, 2026 · NCT06587113

Pilot Study of Suction as a Mechanism of IUD Expulsion With Concomitant Menstrual Cup Use

RecruitingHealthy volunteers welcome
  • Comprehensive Women's Health Center, Denver
Ages 18 to 45 · Women · Updated Feb 12, 2026 · NCT05254041

Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy (CADASIL) Study

RecruitingObservational studyHealthy volunteers welcome
  • University of Colorado, Denver
Ages 18 and older · All sexes · Updated Jan 15, 2026 · NCT05677880

Study of Student Flourishing

RecruitingHealthy volunteers welcome
  • University of Colorado Denver, Denver
Ages 18 and older · All sexes · Updated Dec 18, 2025 · NCT07259746

Educate and Improve Underserved Populations' Uptake and Completion of the HPV Vaccine

RecruitingHealthy volunteers welcome
  • University of Colorado Hospital, Denver
Ages 18 and older · All sexes · Updated Nov 25, 2025 · NCT04611022

Blood Flow Restriction Training in Patients With Lower Extremity Fractures

RecruitingHealthy volunteers welcome
  • Denver Health Medical Center, Denver
Ages 18 to 100 · All sexes · Updated Nov 21, 2025 · NCT06496035

Endothelial Dysfunction After SCI

RecruitingObservational studyHealthy volunteers welcome
  • Craig Hospital, Englewood · 6 mi away
Ages 18 and older · All sexes · Updated Nov 14, 2025 · NCT07227727

The Human Trisome Project

RecruitingObservational studyHealthy volunteers welcome
  • Linda Crnic Institute for Down Syndrome at the University of Colorado Denver, Denver
6 Months – 89 Years · All sexes · Updated Oct 24, 2025 · NCT02864108

Specialty Compared to Oncology Delivered Palliative Care for Patients With Acute Myeloid Leukemia

RecruitingHealthy volunteers welcome
  • University of Colorado Denver I Anschutz Medical Campus, Denver
Ages 18 to 120 · All sexes · Updated Jul 25, 2025 · NCT05237258

TrialNet Pathway to Prevention of T1D

RecruitingObservational studyHealthy volunteers welcome
  • Barbara Davis Center for Childhood Diabetes, Denver
Ages 2 to 45 · All sexes · Updated Jul 1, 2025 · NCT00097292

InSpace Accelerated Rehabilitation Study

RecruitingHealthy volunteers welcome
  • Steadman Hawkins Clinic Denver, Englewood · 6 mi away
Ages 65 and older · All sexes · Updated May 29, 2025 · NCT05329584

Alveolar Macrophage Programming Following Endotoxin Exposure

RecruitingHealthy volunteers welcome
  • National Jewish Health, Denver
Ages 18 to 50 · All sexes · Updated May 6, 2025 · NCT03859050

Effect of Omalizumab in the Skin of Food Allergy Patients

RecruitingPhase 4Healthy volunteers welcome
  • National Jewish Health, Denver
Ages 1 to 55 · All sexes · Updated May 2, 2025 · NCT06618963

Changes in Hemorrhage With Prophylactic Oxytocin for Dilation and Evacuation

RecruitingPhase 2Healthy volunteers welcome
  • Comprehensive Women's Health Center, Denver
Ages 18 to 55 · Women · Updated Dec 10, 2024 · NCT06141447

ProACT Post-Approval Study

RecruitingHealthy volunteers welcome
  • University of Colorado, Denver
Ages 50 and older · Men · Updated Nov 29, 2024 · NCT03767595

Role of Endothelial Function in SCI CVD Risk

RecruitingObservational studyHealthy volunteers welcome
  • Craig Hospital, Englewood · 6 mi away
Ages 18 to 89 · All sexes · Updated Aug 20, 2024 · NCT06443151

Enroll -HD: A Prospective Registry Study in a Global Huntington's Disease Cohort

RecruitingObservational studyHealthy volunteers welcome
  • Cenexel Rocky Mountain Clinical Research, LLC, Englewood · 6 mi away
Ages 18 and older · All sexes · Updated Feb 28, 2024 · NCT01574053

Parenting Skills Group for Mothers With Postpartum Depression

RecruitingHealthy volunteers welcome
  • University of Colorado Denver, Denver
Ages 18 to 50 · Women · Updated Nov 30, 2023 · NCT05772897

Blood Samples for the Study of Peanut, Tree Nut and Other Food Allergies

RecruitingObservational studyHealthy volunteers welcome
  • University of Colorado School of Medicine, Denver
Ages 1 to 75 · All sexes · Updated Dec 19, 2022 · NCT02192866

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.