Location · Washington
Clinical trials recruiting in Washington
461 recruiting studies have at least one site in Washington; 121 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 Washington.
461 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteers
HealthyTogether: RCT of a Dyadic Weight Management Intervention
VA Office of Research and Development
- Location
- Seattle, WA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Familial Inflammatory Bowel Disease Early Risk
Seattle Children's Hospital
- Location
- Seattle, WA
- Eligibility basics
- Ages 0 mo–55
- RecruitingHealthy volunteers
The HOPE Biobank Resource (BMT CTN 2402 HOPE)
Medical College of Wisconsin
- Location
- Seattle, WA + 13 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Telephone-Based Coaching Sessions (TAC) to Improve Advance Care Planning Participation in Advanced Cancer Patients and Their Support Person
Fred Hutchinson Cancer Center
- Location
- Everett, WA + 2 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
ASSESS ALL ALS Study
St. Joseph's Hospital and Medical Center, Phoenix
- Location
- Seattle, WA + 35 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
PREVENT ALL ALS Study
St. Joseph's Hospital and Medical Center, Phoenix
- Location
- Seattle, WA + 30 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
A Digital Smoking Cessation Intervention for Helping American Indians and Alaska Natives Quit Smoking, IndigeQuit Trial
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Development of Measures to Screen for Financial Hardship in Alzheimer's Disease and Dementia
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Mobile Health Application (PACT) to Improve Engagement in Advance Care Planning
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2/Phase 3
Limited Versus Extended Trophic Feeding (LET-FEED) Trial
University of Washington
- Location
- Tacoma, WA
- Eligibility basics
- Ages 0 mo–2
- RecruitingHealthy volunteers
The Tick App: Changing Behaviors With Educational Messaging
University of Wisconsin, Madison
- Location
- Pullman, WA + 3 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Nuestro Valor: Increasing Healthier Food Access for Rural Latino Communities Through a Food Retail Intervention
University of Washington
- Location
- Granger, WA + 1 other US site
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Genetic Determinants of Barrett's Esophagus and Esophageal Adenocarcinoma
Case Western Reserve University
- Location
- Seattle, WA + 9 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Collecting and Studying Blood and Tissue Samples From Patients With Locally Recurrent or Metastatic Prostate or Bladder/Urothelial Cancer
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+ · Men only
- RecruitingHealthy volunteers
Natural History Study of and Genetic Modifiers in Spinocerebellar Ataxias
Lauren Moore
- Location
- Seattle, WA + 13 other US sites
- Eligibility basics
- Ages 6+
- RecruitingHealthy volunteers
PPMI Clinical - Establishing a Deeply Phenotyped PD Cohort
Michael J. Fox Foundation for Parkinson's Research
- Location
- Seattle, WA + 29 other US sites
- Eligibility basics
- Ages 30+
- RecruitingHealthy volunteersPhase 2/Phase 3
A Study of Potential Disease Modifying Treatments in Individuals at Risk for or With a Type of Early Onset AD Caused by a Genetic Mutation
Washington University School of Medicine
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2/Phase 3
A Study of a Potential Disease Modifying Treatment in Individuals at Risk for or With a Type of Early Onset AD Caused by a Genetic Mutation
Washington University School of Medicine
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Exploring the Decision to Drink (More) Alcohol Following Manipulations of Stress and Social Context
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 21–50
- RecruitingHealthy volunteers
Pancreatic Cancer Early Detection Consortium
Arbor Research Collaborative for Health
- Location
- Seattle, WA + 39 other US sites
- Eligibility basics
- Ages 18–90
- RecruitingHealthy volunteers
Multicenter HomeVENT: Home Values and Experiences Navigation Track
Johns Hopkins University
- Location
- Seattle, WA + 3 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Pharmaceutically-Enhanced Reinforcement for Reduced Alcohol and Smoking
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Mirtazapine for the Treatment of Methamphetamine Use in Opioid Use Disorder Patients Receiving Medication Assisted Treatment
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
An Adapted Evidence-Based Coaching Program for Fathers and Their Young Children in the Context of Home Visiting
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 1+