Healthy volunteers · Washington
Studies for healthy volunteers in Washington
121 studies have at least one recruiting site in Washington. 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.
121 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingHealthy volunteersPhase 1/Phase 2
Phase 1/2 Study of Respiratory Syncytial Virus and Human Metapneumovirus (RSV+HMPV) Vaccine Candidate in Adults 60 Years of Age and Older
Sanofi
- Location
- Seattle, WA + 49 other US sites
- Eligibility basics
- Ages 60+
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study of Investigational RSV/hMPV Combination and Investigational hMPV Vaccines in Younger and Older Adults
GlaxoSmithKline
- Location
- Seattle, WA + 2 other US sites
- Eligibility basics
- Ages 18–80
- RecruitingHealthy volunteersPhase 1/Phase 2
A Study on the Safety and Immune Response of a Urinary Tract Infection (UTI) Vaccine in Adults 18-64 Years of Age and Clinical Efficacy in Females 18-64 Years of Age
GlaxoSmithKline
- Location
- Seattle, WA + 5 other US sites
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersPhase 1/Phase 2
Study of VGA039 in Healthy Volunteers and Patients With Von Willebrand Disease (VIVID)
Vega Therapeutics, Inc
- Location
- Seattle, WA + 9 other US sites
- Eligibility basics
- Ages 12–60
- RecruitingHealthy volunteersEarly Phase 1
Contribution of UGT2B17 to the Pharmacokinetics of Diclofenac
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 18–65
- RecruitingHealthy volunteersPhase 1
KABAWIL: Reducing Intersectional Stigmas
University of Washington
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersEarly Phase 1
Effects of a Hemp Product on the Pharmacokinetics and Pharmacodynamics of Clopidogrel
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 21–64
- RecruitingHealthy volunteersEarly Phase 1
Evaluating the Pharmacokinetics of Oregano and Potential Oregano-drug Interactions Using a Drug Cocktail Approach
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 18–64
- RecruitingHealthy volunteersEarly Phase 1
Evaluating a Potential Pharmacokinetic Kratom-oxycodone Interaction Concurrent With Clinical Endpoints
Washington State University
- Location
- Spokane, WA
- Eligibility basics
- Ages 21–45
- RecruitingHealthy volunteersPhase 1/Phase 2
Chemotherapy (Decitabine in Combination With FLAG-Ida) and Total-Body Irradiation Followed by Donor Stem Cell Transplant for the Treatment of Adults With Myeloid Malignancies at High Risk of Relapse
Fred Hutchinson Cancer Center
- Location
- Seattle, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 4Overnight stay mentioned
Simethicone as Part of ERAS in Bariatric Surgery Patients
Madigan Army Medical Center
- Location
- Tacoma, WA
- Eligibility basics
- Ages 18–89
- RecruitingHealthy volunteersPhase 3
A Study of Aleniglipron in Adults With Obesity or Overweight and Type 2 Diabetes Mellitus (ACCOMPLISH-2)
Gasherbrum Bio, Inc., a wholly owned subsidiary of Structure Therapeutics
- Location
- Renton, WA + 55 other US sites
- Eligibility basics
- Ages 18–79
- RecruitingHealthy volunteersPhase 3
A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose
Pfizer
- Location
- Seattle, WA + 76 other US sites
- Eligibility basics
- Ages 0 mo+
- RecruitingHealthy volunteers
Contraceptive Efficacy Study of Ovaprene
Daré Bioscience, Inc.
- Location
- Seattle, WA + 3 other US sites
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingHealthy volunteers
A Study to Test the Repeatability and Reproducibility in Rod Intercept Time Within the AdaptDx Pro in Healthy Subjects With Normal Vision (FlashForward)
AdaptDx, Inc.
- Location
- Silverdale, WA
- Eligibility basics
- Ages 22–49
- RecruitingHealthy volunteers
Observational Study of Decentralized Urine Optical Interaction Patterns Associated With Environmental Microplastic and Nanoplastic Exposure
Ecotera Health LLC
- Location
- Seattle, WA + 50 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Within-Subject Comparison of Adipose Tissue Viability Following Liposuction
Apyx Medical
- Location
- Olympia, WA + 1 other US site
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteers
Metatranscriptomic Markers of Colonic Neoplasia
Viome
- Location
- Bothell, WA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Comparative Self-collection for Cervical Cancer Screening Pivotal Study
Mel Mont Medical
- Location
- Lynnwood, WA + 10 other US sites
- Eligibility basics
- Ages 25–65 · Women only
- RecruitingHealthy volunteers
Safety and Effectiveness Evaluation of the High-intensity Focused Ultrasound Device for Lifting Lax Submental and Neck Tissue
CLASSYS Inc.
- Location
- Spokane, WA + 4 other US sites
- Eligibility basics
- Ages 30–65
- RecruitingHealthy volunteers
Autologous Hair Follicle Derived Secretome as Adjunct to Aesthetic Procedures
Acorn Biolabs Inc.
- Location
- Vancouver, WA + 18 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 2
Effects of NLS-133, a Potential Non-Hormonal "On-Demand" Male Contraceptive
Next Life Sciences
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–55 · Men only
- RecruitingHealthy volunteers
Development of a Quantifiable Ultrasound Biomarker for Hepatic Steatosis
ContextVision AB
- Location
- Seattle, WA
- Eligibility basics
- Ages 18–75
- RecruitingHealthy volunteers
Collection and Analyses of Physiological, Physical, and Molecular Data From a Diverse Population
Viome
- Location
- Bothell, WA
- Eligibility basics
- Any age listed
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.