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Washington Paid Clinical Trials
A listing of 1730 clinical trials in Washington actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1453 - 1464 of 1730
Washington is currently home to 1730 active clinical trials, seeking participants for engagement in research studies. These trials take place at a variety of cities in the state, including Seattle, Spokane, Tacoma and Vancouver. Whether you're a healthy volunteer interested in paid medical research or someone seeking trials related to a specific condition, the state offers a diverse array of opportunities in your vicinity.
Featured Therapy
Unique Treatment for High Blood Pressure
Worried about high blood pressure? Think beyond typical high blood pressure treatments.
People who may be candidates for this procedure:
• Are at least 18 years old
• Have been unable to manage their high blood pressure with medications or lifestyle changes alone¹
Learn about a safe and effective procedure that may help reduce high blood pressure. See if you qualify today.
¹ Kandzari DE, et al. J Am Coll Cardiol. Nov 7, 2023;82(19):1809-1823.
People who may be candidates for this procedure:
• Are at least 18 years old
• Have been unable to manage their high blood pressure with medications or lifestyle changes alone¹
Learn about a safe and effective procedure that may help reduce high blood pressure. See if you qualify today.
¹ Kandzari DE, et al. J Am Coll Cardiol. Nov 7, 2023;82(19):1809-1823.
Conditions:
High Blood Pressure
High Blood Pressure (& [Essential Hypertension])
High Blood Pressure (Hypertension).
Hypertension
Essential Hypertension
Featured Offer
Join Thousands Waiting for Retatrutide
Retatrutide could change the weight loss landscape. Unlike semaglutide or tirzepatide, it activates three hormone receptors simultaneously — and early data shows it:
✅ Outpaced existing GLP-1 medications for weight loss in clinical trials
✅ Improved blood sugar, blood pressure, and cholesterol beyond weight loss alone
✅ Delivered results with a simple once-weekly injection
✅ Now in Phase 3 trials with FDA submission expected in the next 1–2 years
Join the waiting list. One email when it launches — that's it.
✅ Outpaced existing GLP-1 medications for weight loss in clinical trials
✅ Improved blood sugar, blood pressure, and cholesterol beyond weight loss alone
✅ Delivered results with a simple once-weekly injection
✅ Now in Phase 3 trials with FDA submission expected in the next 1–2 years
Join the waiting list. One email when it launches — that's it.
Conditions:
Weight Loss
Featured Offer
Discover Affordable Semaglutide Providers
We Checked the Checkout Page on Every Semaglutide Provider. Here's What We Found.
There's a big difference between the price on a landing page and what you actually pay. We went all the way through checkout so you know exactly what to expect.
📋 5 providers ranked by true monthly cost
💵 Options starting as low as $149/month
🏥 Only licensed providers using FDA-registered pharmacies
⭐ Real Trustpilot scores included — including the ones with mixed reviews
🔒 Includes cancellation policy warnings so you don't get stuck
There's a big difference between the price on a landing page and what you actually pay. We went all the way through checkout so you know exactly what to expect.
📋 5 providers ranked by true monthly cost
💵 Options starting as low as $149/month
🏥 Only licensed providers using FDA-registered pharmacies
⭐ Real Trustpilot scores included — including the ones with mixed reviews
🔒 Includes cancellation policy warnings so you don't get stuck
Conditions:
Weight Loss
Morbid Obesity
Featured Trial
Healthy Participants Needed (Colonoscopy + Cancer Screening)
Recruiting
Earn $325 - $475 in electronic payment card compensation for your time and effort by participating in a clinical study to develop a blood test that may one day help screen for colon cancer. Take a quick quiz to see if you qualify.
Conditions:
Healthy
Healthy Volunteers
Healthy Subjects
Healthy Volunteer
Healthy Participants
Featured Trial
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
Conditions:
Healthy
Healthy Volunteer Study
International Spontaneous Coronary Artery Dissection (SCAD) "iSCAD" Registry
Recruiting
The aim of "iSCAD," the International Spontaneous Coronary Artery Dissection (SCAD) Registry, is to serve as an internationally collaborative, multicenter registry coordinated by an experienced and centralized coordinating center in an effort to increase the pace of participant recruitment, and thereby increase statistical power of studies related to SCAD.
The ultimate goal of iSCAD Registry is to facilitate the development of best practices and clinical guidelines for preventing SCAD or its re... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
12/12/2024
Locations: University of Washington Medicine, Seattle, Washington
Conditions: Spontaneous Coronary Artery Dissection
Pharmacokinetics and Safety of Commonly Used Drugs in Lactating Women and Breastfed Infants
Recruiting
Over half of women in the US who are breastfeeding their infants take prescription drugs. You are being asked to participate in this study because you are breastfeeding your infant and are currently taking, as part of your medical care, at least one of the drugs we are studying. We are interested in studying drugs commonly prescribed to women who are breastfeeding so we can learn more about the amount of drug that is transferred to breastmilk and estimate how much of drug that is consumed by bre... Read More
Gender:
ALL
Ages:
All
Trial Updated:
12/12/2024
Locations: University of Washington, Seattle, Washington
Conditions: Lactating Women on Select DOI, Breastfed Infants of Mothers on Select DOI
The Study of Immunization in People Living With HIV Undergoing an ATI for Elicitation of VRC01-lineage Antibodies
Recruiting
This is a multicenter controlled interventional trial. This phase 1 trial is the first study to assess 426c.Mod.Core-C4b adjuvanted with 3M-052-AF + aluminum hydroxide suspension (Alum) in people living with HIV (PLWH).
Gender:
ALL
Ages:
Between 18 years and 55 years
Trial Updated:
12/11/2024
Locations: Seattle Vaccine and Prevention CRS (Site # 30331), Seattle, Washington
Conditions: Chronic HIV Infection
ARDS in Children and ECMO Initiation Strategies Impact on Neurodevelopment (ASCEND)
Recruiting
ASCEND researchers are partnering with families of children who receive extracorporeal membrane oxygenation (ECMO) after a sudden failure of breathing named pediatric acute respiratory distress syndrome (PARDS). ECMO is a life support technology that uses an artificial lung outside of the body to do the lung's work. ASCEND has two objectives.
The first objective is to learn more about children's abilities and quality of life among ECMO-supported children in the year after they leave the pediatr... Read More
Gender:
ALL
Ages:
Between 14 days and 20 years
Trial Updated:
12/11/2024
Locations: Seattle Children's Hospital, Seattle, Washington
Conditions: Acute Respiratory Distress Syndrome, Extracorporeal Membrane Oxygenation
Genomic Biomarker-Selected Umbrella Neoadjuvant Study for High Risk Localized Prostate Cancer
Recruiting
The objective of this study is to see if providing an appropriate therapy based on the genomic testing of prostate tumour tissue will result in an improved clinical response.
Each participant will be treated with 8 weeks of a luteinizing hormone-releasing hormone agonist (LHRHa) plus apalutamide (APA) while genome sequence characterization is being done. Participants with biopsy specimens deemed unevaluable for genomic testing will remain on LHRHa plus APA for an additional 16 weeks.
Participa... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
12/11/2024
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Prostate Cancer
Spastic Paraplegia - Centers of Excellence Research Network
Recruiting
The Spastic Paraplegia - Centers of Excellence Research Network (SP-CERN) is a collaborative research consortium dedicated to advancing the understanding, diagnosis, and treatment of hereditary spastic paraplegia (HSP) and primary lateral sclerosis (PLS). Aims of the consortium are to a) perform natural history studies of HSP subtypes, b) discover and validate biomarkers and clinician- and patient-reported outcome measures, c) uncover HSP's molecular pathophysiology and develop rational therapeu... Read More
Gender:
ALL
Ages:
All
Trial Updated:
12/10/2024
Locations: Seattle Children's Hospital, Seattle, Washington
Conditions: Hereditary Spastic Paraplegia, Primary Lateral Sclerosis, SPG4, SPG5A, Spastic Paraplegia 4, Spastic Paraplegia 5A, Early Onset Hereditary Spastic Paraplegia, Neuromuscular Diseases, Spastic Paraplegia, Hereditary
A Novel Vaccine (EO2463) as Monotherapy and in Combination, for Treatment of Patients With Indolent Non-Hodgkin Lymphoma
Recruiting
The purpose of this study is to define the recommended Phase 2 Dose, safety, tolerability, immunogenicity, and preliminary efficacy of EO2463 during monotherapy and in combination with lenalidomide and/or rituximab in patients with indolent NHL
Gender:
ALL
Ages:
18 years and above
Trial Updated:
12/10/2024
Locations: University of Washington-Seattle Cancer Care Alliance, Seattle, Washington
Conditions: Follicular Lymphoma, Marginal Zone Lymphoma
Gravity Versus Vacuum Based Indwelling Tunneled Pleural Drainage System
Recruiting
Malignant pleural effusion remains a debilitating complication of end stage cancer, which can be greatly improved by the introduction of the indwelling tunneled pleural catheter (IPC). However, there is no standard of care regarding drainage and limited data on the utility of different drainage techniques. In addition, many patients develop discomfort and chest pain during drainage. The investigators propose to evaluate gravity drainage and suction drainage on quality of life measures and outcom... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
12/09/2024
Locations: Swedish Medical Center, Seattle, Washington
Conditions: Pleural Effusion
HSCT for Patients With Fanconi Anemia Using Risk-Adjusted Chemotherapy
Recruiting
The purpose of this study is to determine whether the use of lower doses of busulfan and the elimination of cyclosporine will further reduce transplant-related side effects for patients with Fanconi Anemia (FA). Patients will undergo a transplant utilizing mis-matched related or matched unrelated donors following a preparative regimen of busulfan, fludarabine, anti-thymocyte globulin and cyclophosphamide.
Gender:
ALL
Ages:
3 months and above
Trial Updated:
12/09/2024
Locations: Fred Hutchinson Cancer Research Center, Seattle, Washington
Conditions: Fanconi Anemia, Severe Marrow Failure, Myelodysplastic Syndrome (MDS), Acute Myelogenous Leukemia (AML)
Real World Insights During Treatment for Relapsed/Refractory Multiple Myeloma with Isatuximab
Recruiting
This descriptive study aims to evaluate the experience of adults with relapsed or refractory multiple myeloma receiving standard of care isatuximab-irfc through collection of quantitative, qualitative and wearable data. Fifty adults with relapsed or refractory multiple myeloma receiving standard of care isatuximab-irfc will be enrolled across 2 sites, The University of California San Francisco and The University of Texas MD Anderson Cancer Center. Consented participants will be enrolled in a 3-m... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
12/06/2024
Locations: University of Washington, Seattle, Washington
Conditions: Multiple Myeloma, Refractory Multiple Myeloma
Brain Oxygen Optimization in Severe TBI, Phase 3
Recruiting
BOOST3 is a randomized clinical trial to determine the comparative effectiveness of two strategies for monitoring and treating patients with traumatic brain injury (TBI) in the intensive care unit (ICU). The study will determine the safety and efficacy of a strategy guided by treatment goals based on both intracranial pressure (ICP) and brain tissue oxygen (PbtO2) as compared to a strategy guided by treatment goals based on ICP monitoring alone. Both of these alternative strategies are used in s... Read More
Gender:
ALL
Ages:
14 years and above
Trial Updated:
12/06/2024
Locations: Harborview Medical Center, Seattle, Washington
Conditions: Brain Injuries, Traumatic
Study of Safety and Efficacy of RGT-61159 in Adults with Relapsed/Refractory Adenoid Cystic Carcinoma (ACC) or Colorectal Carcinoma (CRC)
Recruiting
Phase 1 study to evaluate safety, tolerability and anti-tumor activity of RGT-61159 in patients with ACC or CRC
Gender:
ALL
Ages:
18 years and above
Trial Updated:
12/05/2024
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Adenoid Cystic Carcinoma, Colorectal Cancer
