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
A Multilevel Intervention to Increase Colorectal Cancer Screening Tests in Patients With Abnormal Fecal Immunochemical Test Results, PROACT Trial
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 45–75
- RecruitingHealthy volunteers
Childhood Cancer Survivor Study
St. Jude Children's Research Hospital
- Location
- Seattle, WA + 26 other US sites
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Adapted Helping Ovarian Cancer Patients Cope Intervention to Address Burnout for Gynecologic Oncology Clinicians
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Donor Stem Cell Transplant With Treosulfan, Fludarabine, and Total-Body Irradiation for the Treatment of Hematological Malignancies
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 6 mo+
- RecruitingHealthy volunteers
Sleep and Performance
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–30
- RecruitingHealthy volunteers
Late Onset Alzheimer's Disease
Columbia University
- Location
- Seattle, WA + 11 other US sites
- Eligibility basics
- Ages 55+
- RecruitingHealthy volunteers
Systems Analysis and Improvement to Optimize Opioid Use Disorder Care Quality and Continuity for Patients Exiting Jail
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–110
- RecruitingHealthy volunteers
Prostate Cancer Screening for People at Genetic Risk for Aggressive Disease, PATROL Study
University of Washington
- Location
- Seattle, WA + 6 other US sites
- Eligibility basics
- Ages 40+ · Men only
- RecruitingHealthy volunteers
QT-Digital Mental Health Engagement Study
University of Washington
- Location
- Seattle, WA + 1 other US site
- Eligibility basics
- Ages 14+
- RecruitingHealthy volunteers
An Automatically Adjusting Prosthetic Socket for People With Transtibial Amputation
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Using Shared Decision Making to Improve Family Media Use Planning
Seattle Children's Hospital
- Location
- Seattle, WA
- Eligibility basics
- Ages 11+
- RecruitingHealthy volunteers
BASIS Optimization
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Pharmacogenomics for Better Treatment of Fungal Infections Clinical Trial
The University of Queensland
- Location
- Seattle, WA
- Eligibility basics
- Ages 2+
- RecruitingHealthy volunteers
The INFLUENTIAL Trial- Evaluation of National Inpatient Influenza Vaccination Program
University of Colorado, Denver
- Location
- Seattle, WA + 1 other US site
- Eligibility basics
- Ages 6 mo–99
- RecruitingHealthy volunteers
Detailed Phenotypic and Genotype Study to Correlate RB1 Mutations Relating to Primary Ocular Tumors and Secondary Extra-ocular Metastasis.
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
Delivering Evidence-Based Parenting Services to Families in Child Welfare Using Telehealth
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Effects of Hemp-Derived Cannabinoids on Menopause Symptoms
Washington State University
- Location
- Pullman, WA
- Eligibility basics
- Ages 40–60 · Women only
- RecruitingHealthy volunteers
Pediatric Normative Markerless Movement Analysis
MultiCare Health System Research Institute
- Location
- Puyallup, WA
- Eligibility basics
- Ages 3–25
- RecruitingHealthy volunteers
Individual Factors of CBT Underlying Success
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–45
- RecruitingHealthy volunteers
Hemophilia A Research Program
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Any age listed
- RecruitingHealthy volunteers
North American Mitochondrial Disease Consortium Patient Registry and Biorepository (NAMDC)
Columbia University
- Location
- Seattle, WA + 15 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
- Seattle, WA + 9 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Study of Healthy Aging and Physical Function With Elamipretide
David Marcinek
- Location
- Seattle, WA
- Eligibility basics
- Ages 65–80
- RecruitingHealthy volunteers
Ultrasound to Facilitate Stone Passage
University of Washington
- Location
- Seattle, WA + 1 other US site
- Eligibility basics
- Ages 18+