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Washington Paid Clinical Trials
A listing of 1736 clinical trials in Washington actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
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Clinical Trial Phase
Washington is currently home to 1736 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 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
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
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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 Offer
On Medicare? GLP-1's Covered By Medicare Part D [Found Partnership]
Found is now serving individuals who are 65-75 with GLP-1 support for weight care. You need Medicare Part D, must be 18 or older, and must meet BMI criteria when you start GLP-1 therapy:
- BMI 35 or higher, or
- BMI 30–34.99 with at least one qualifying condition (diastolic heart failure, uncontrolled hypertension, CKD stage 3a or higher, prediabetes, prior heart attack or stroke, symptomatic peripheral artery disease), or
- BMI 27–29.99 with prediabetes, prior heart attack/stroke, or symptomatic peripheral artery disease.
- BMI 35 or higher, or
- BMI 30–34.99 with at least one qualifying condition (diastolic heart failure, uncontrolled hypertension, CKD stage 3a or higher, prediabetes, prior heart attack or stroke, symptomatic peripheral artery disease), or
- BMI 27–29.99 with prediabetes, prior heart attack/stroke, or symptomatic peripheral artery disease.
Conditions:
Healthy
Overweight
Overweight and Obesity
Obesity
Overweight or 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
24 Weeks Double-blind Randomized Placebo-controlled Trial to Evaluate Efficacy, PK, Safety of LOU064 in Adolescents (12 - <18) With CSU and Inadequate Response to H1-antihistamine Followed by Optional 3 Years Open-label Extension and an Optional 3 Years Safety Long-term Treatment-free Follow-up
Recruiting
The purpose of this trial is:
1. to assess the efficacy, pharmacokinetics, and safety of remibrutinib vs. placebo in adolescents from 12 to \< 18 years of age suffering from chronic spontaneous urticaria inadequately controlled by H1-antihistamines
2. to collect long-term efficacy, safety and tolerability data on remibrutinib in adolescents after having completed 24 weeks of treatment
3. to collect safety data in this population for up to three years after the last dose of study treatment
Gender:
ALL
Ages:
Between 12 years and 17 years
Trial Updated:
06/27/2025
Locations: Seattle Allergy and Asthma Rsch, Seattle, Washington
Conditions: Chronic Spontaneous Urticaria
A Study to Evaluate XEN1101 as Adjunctive Therapy in Primary Generalized Tonic-Clonic Seizures
Recruiting
This is a Phase 3, multicenter, randomized, double-blind, placebo-controlled study to evaluate the clinical efficacy, safety, and tolerability of XEN1101 administered as adjunctive treatment in primary generalized tonic-clonic seizures (PGTCS).
Gender:
ALL
Ages:
12 years and above
Trial Updated:
06/27/2025
Locations: University of Washington, Regional Epilepsy Center at Harborview Medical Center, Seattle, Washington
Conditions: Primary Generalized Tonic-Clonic Seizures
A Randomized Study of XEN1101 Versus Placebo in Focal-Onset Seizures
Recruiting
The X-TOLE2 Phase 3 clinical trial is a randomized, double-blind, placebo-controlled study that will evaluate the clinical efficacy, safety and tolerability of XEN1101 administered as adjunctive therapy in focal-onset seizures.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/27/2025
Locations: University of Washington Main Hospital, Seattle, Washington
Conditions: Focal Onset Seizures
A Study of mRNA-1647 Cytomegalovirus Vaccine in Healthy Participants 9 to 15 Years of Age and Participants 16 to 25 Years of Age
Recruiting
The main purpose of study is to evaluate the safety and immunogenicity of different dose levels of mRNA-1647 versus control in healthy cytomegalovirus (CMV)-seronegative and CMV-seropositive female and male participants 9 to 15 years of age. In addition, mRNA-1647 will be evaluated in female participants 16 to 25 years as a comparator cohort.
Gender:
ALL
Ages:
Between 9 years and 25 years
Trial Updated:
06/27/2025
Locations: MultiCare Institute for Research and Innovation, Spokane, Washington
Conditions: Cytomegalovirus
Addressing Barriers to Care for Substance Use Disorder Trial
Recruiting
The Addressing Barriers to Care for Substance Use Disorder Trial (ABC-SUD) is a cluster-randomized crossover trial, with clinicians (care coordinators) as the unit of randomization.
This study will be conducted in a mental health access center within the Washington region of Kaiser Permanente. As part of usual care, patients contact the mental health access center and speak to a care coordinator to obtain an appointment with or contact information for potential venues to obtain treatment for su... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: Kaiser Permanente Washington, Seattle, Washington
Conditions: Drug Use Disorders, Alcohol-Related Disorders, Substance Use Disorder (SUD)
Cognitive Training and Neuroplasticity in Mild Cognitive Impairment: COGIT-2 Trial
Recruiting
Effective, clinically meaningful treatments are lacking for patients with mild cognitive impairment (MCI), which is associated with increased risk of transition to dementia. Cognitive training represents an important therapeutic strategy. In a previous study, crossword puzzles were found to be superior to computerized cognitive training on the primary cognitive outcome and function with decreased brain atrophy. Building on these findings, this study will evaluate and compare the impact of high d... Read More
Gender:
ALL
Ages:
Between 55 years and 89 years
Trial Updated:
06/26/2025
Locations: University of Washington, Seattle, Washington
Conditions: Mild Cognitive Impairment (MCI), Cognitive Training
QuantifyHER: Quantitative Immunofluorescence and/or RT-qPCR for Measuring HER2 in HER2-low Metastatic Breast Cancer
Recruiting
This study will assess whether a quantitative, HER2 assay can accurately and reliably discriminate between responders and non-responders among patients with HER2 IHCI+ metastatic breast cancer who are receiving T-Dxd.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: University of Washington - Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: HER2-positive Metastatic Breast Cancer
First-in-Human Study of OKI-219 in Advanced Solid Tumors and Advanced Breast Cancer
Recruiting
OKI-219-101 is a Phase 1a/1b, open-label, multicenter, dose-escalation study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PDx), and efficacy of OKI-219 as monotherapy and in combination with fulvestrant or trastuzumab. Phase 1a (Part A) will investigate escalating doses of OKI-219 monotherapy, and Phase 1b will investigate OKI-219 (at a tolerated dose determined in Part A) in combination with standard dose fulvestrant (Part B) or standard dose trastuzum... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Advanced Cancer, Breast Cancer
Study With Various Immunotherapy Treatments in Participants With Lung Cancer
Recruiting
The purpose of this study is to assess the objective response rate (ORR) of immunotherapy-based combination therapy and to assess the safety and tolerability of immunotherapy-based combination therapy.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: Medical Oncology Associated, PS (dba Summit Cancer Centers), Spokane, Washington
Conditions: Advanced Non-Small Cell Lung Cancer
ONC-392 Versus Docetaxel in Metastatic NSCLC That Progressed on PD-1/PD-L1 Inhibitors
Recruiting
The goal of this Phase 3 clinical trial is study the safety and efficacy of the nextgen anti-CTLA-4 antibody, gotistobart (ONC-392/BNT316), in patients with metastatic non-small cell lung cancer who have disease progressed on anti-PD-1/PD-L1 antibody based therapy. The study will test whether gotistobart, in comparison with chemotherapy agent docetaxel, could prolong the life for NSCLC patients. Patients will be randomized to be treated with either gotistobart or docetaxel, IV infusion, once eve... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: MultiCare Institute for Research and Innovation - Tacoma - 1148, Spokane, Washington
Conditions: Non Small Cell Lung Cancer
Clinical Study of Antibody-Drug Conjugate MYTX-011 in Subjects With Non-Small Cell Lung Cancer
Recruiting
This is a Phase I open label multi-center study to evaluate the safety, tolerability, pharmacokinetics and preliminary effectiveness of the investigational drug MYTX-011 in patients with locally advanced, recurrent or metastatic NSCLC. MYTX-011 is in a class of medications called antibody drug conjugates (ADCs). MYTX-011 is composed of a pH-dependent anti-cMET antibody and the potent antimicrotubule drug monomethyl auristatin E (MMAE).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/26/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: NSCLC, NSCLC Stage IV, NSCLC Stage IIIB, Non-Small Cell Lung Cancer, Advanced Non-Small Cell Squamous Lung Cancer, Advanced Non-Small Cell Lung Cancer, Advanced Non-Small Cell Non-Squamous Lung Cancer
The Longitudinal Impact of Respiratory Viruses on Bronchiolitis Obliterans Syndrome After Allogeneic Hematopoietic Cell Transplantation (The RV-BOS Study)
Recruiting
This observational trial studies whether respiratory viruses are the cause of lung disease (bronchiolitis obliterans syndrome \[BOS\] or graft-versus-host disease of the lung) and changes in lung function in patients who have received a donor stem cell transplant. Patients with chronic graft-versus-host disease (cGVHD) are at higher risk of developing BOS. Studies have also shown that patients who had a respiratory viral illness early after their transplant are at higher risk of developing lung... Read More
Gender:
ALL
Ages:
8 years and above
Trial Updated:
06/26/2025
Locations: Fred Hutch/University of Washington Cancer Consortium, Seattle, Washington
Conditions: Bronchiolitis Obliterans Syndrome, Hematopoietic and Lymphoid Cell Neoplasm