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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.
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Clinical Trial Phase
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 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
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Discover Affordable Semaglutide Providers
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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
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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 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
Discover Clinical Trials In Your Area (Compensation Provided)
Recruiting
Clinical trials in your area are actively enrolling — and they compensate you for your time. Finding the right one has never been easier.
- Matched to trials in your zip code
- Compensation for time & travel
- Free or low-cost treatments available
- No experience or medical background needed
- Takes just 30 seconds to see if you qualify
- Matched to trials in your zip code
- Compensation for time & travel
- Free or low-cost treatments available
- No experience or medical background needed
- Takes just 30 seconds to see if you qualify
Conditions:
Healthy
Healthy Volunteers
Contour Neurovascular System™ ContiNued Access Investigational Device EXempTion (IDE) Trial (NEXT Trial)
Recruiting
The goal of this clinical trial is to collect additional data to demonstrate if the Contour Neurovascular System (CNS) is a safe and effective treatment of wide-necked, saccular, intracranial aneurysms.
Participants will:
Undergo treatment with the Contour Neurovascular System Complete follow-up visits at 1month, 12months, and 24 months, following their procedure Report any adverse events to their study team
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/18/2025
Locations: Swedish Neuroscience Institute, Seattle, Washington
Conditions: Cerebral Aneurysms
A Phase 2 Study of NEU-411 in Companion Diagnostic-Positive Participants With Early Parkinson's Disease
Recruiting
The goal of this Phase 2 clinical trial is to investigate the efficacy and safety of NEU-411 in men and women aged 40-80 years with early Parkinson's Disease (PD) who have predicted elevations in the activity of the "leucine-rich repeat kinase 2" ("LRRK2" for short) pathway based on their genetic profile. A DNA test will be used to identify the "LRRK2-driven" population with predicted elevation in the LRRK2 pathway.
Participants will:
• Take NEU-411 or placebo every day for 52 weeks
Gender:
ALL
Ages:
Between 40 years and 80 years
Trial Updated:
08/18/2025
Locations: EvergreenHealth, Kirkland, Washington
Conditions: Parkinson Disease, Parkinson, Idiopathic Parkinson Disease, Early Parkinson Disease (Early PD), Parkinson Disease, Idiopathic
FORWARD CAD IDE Study
Recruiting
The FORWARD CAD IDE Study is a Prospective, Multicenter, Single-Arm, Investigational Device Exemption (IDE) Study conducted to assess the safety and effectiveness of the Shockwave Intravascular Lithotripsy (IVL) System with the Javelin Coronary IVL Catheter for the treatment of calcified, stenotic de novo coronary artery lesions prior to stenting.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Overlake Medical Center, Bellevue, Washington
Conditions: Coronary Arterial Disease (CAD)
EF-41/KEYNOTE D58: Phase 3 Study of Optune Concomitant With Temozolomide Plus Pembrolizumab in Newly Diagnosed Glioblastoma
Recruiting
This is a multicenter, two-arm, randomized, double-blind, placebo-controlled study of Optune® (Tumor Treating Fields at 200 kHz) together with maintenance Temozolomide (TMZ) chemotherapy agent and pembrolizumab compared to Optune® together with maintenance TMZ and placebo in newly diagnosed Glioblastoma (GBM) patients. The primary objective of the study is to evaluate the Overall Survival (OS).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Swedish Medical Center, Seattle, Washington
Conditions: Glioblastoma
Study of Targeted Therapies for the Treatment of Adult Participants With Moderate to Severe Crohn's Disease
Recruiting
Crohn's disease (CD) is a long-lasting disease that causes severe inflammation (redness, swelling), in the digestive tract, most frequently affecting the bowels. It can cause many different symptoms including belly pain, diarrhea, tiredness, and weight loss. Treatments are available but do not work the same for all patients or may stop working over time. This study will evaluate the effectiveness and adverse events of targeted therapies (TaTs) for adult participants with moderate to severe CD.... Read More
Gender:
ALL
Ages:
Between 18 years and 75 years
Trial Updated:
08/18/2025
Locations: Washington Gastroenterology - Tacoma /ID# 267302, Tacoma, Washington
Conditions: Crohn's Disease
A Study to Evaluate the Efficacy and Safety of CBL-514 Compared to Placebo in Participants With Dercum's Disease Lipomas
Recruiting
This is a single-blind, placebo-controlled, randomized phase 2 study to evaluate the efficacy and safety of CBL-514 injections in participants with Dercum's Disease lipomas.
Gender:
ALL
Ages:
Between 18 years and 64 years
Trial Updated:
08/18/2025
Locations: Investigator Site, Spokane, Washington
Conditions: Dercum's Disease
A Study Evaluating Efruxifermin in Subjects With Non-Cirrhotic Nonalcoholic Steatohepatitis (NASH)/Metabolic Dysfunction-Associated Steatohepatitis (MASH) and Fibrosis
Recruiting
This is a multi-center evaluation of efruxifermin (EFX) in a randomized, double-blind, placebo-controlled study in subjects with non-cirrhotic NASH/MASH and fibrosis stage 2 or 3 (F2 or F3).
The study will enroll subjects in two cohorts for a total samples size of 1650 subjects.
Gender:
ALL
Ages:
Between 18 years and 80 years
Trial Updated:
08/18/2025
Locations: Akero Clinical Study Site, Seattle, Washington
Conditions: NASH With Fibrosis, MASH With Fibrosis
A Study of Repotrectinib Versus Crizotinib in Participants With Locally Advanced or Metastatic Tyrosine Kinase Inhibitor (TKI)-naïve ROS1-positive Non-Small Cell Lung Cancer (NSCLC) (TRIDENT-3)
Recruiting
The purpose of this study is to evaluate the efficacy and safety of repotrectinib and crizotinib in participants with locally advanced or metastatic TKI-naïve ROS1-positive non-small cell lung cancer (NSCLC).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Local Institution - 0214, Tacoma, Washington
Conditions: Carcinoma, Non-Small-Cell Lung
Real-World Study of ABBV-951 Subcutaneous Infusion to Assess Change in Disease Activity in Adult Participants With Parkinson's Disease
Recruiting
Parkinson's disease (PD) is a neurological condition, which affects the brain. PD gets worse over time, but how quickly it progresses varies a lot from person to person. Some symptoms of PD are tremors, stiffness, and slowness of movement. The purpose of this study is to evaluate how effective ABBV-951 is in treating adult participants with advanced PD in real world setting.
ABBV-951 (foslevodopa/foscarbidopa) is an approved drug for the treatment of Parkinson's Disease. The main ROSSINI study... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Inland Northwest Research /ID# 253460, Spokane, Washington
Conditions: Parkinson's Disease (PD)
A Study of the Efficacy and Safety of Adjuvant Autogene Cevumeran Plus Atezolizumab and mFOLFIRINOX Versus mFOLFIRINOX Alone in Participants With Resected PDAC
Recruiting
The purpose of this study is to evaluate the efficacy and safety of adjuvant autogene cevumeran plus atezolizumab and modified leucovorin, 5-fluorouracil (5-FU), irinotecan, and oxaliplatin (mFOLFIRINOX) versus mFOLFIRINOX alone in participants with resected pancreatic ductal adenocarcinoma (PDAC) who have not received prior systemic anti-cancer treatment for PDAC and have no evidence of disease after surgery.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Fred Hutchinson Cancer Research Center, Seattle, Washington
Conditions: Adenocarcinoma, Pancreatic Ductal
ELEMENT-MDS: A Study to Compare the Efficacy and Safety of Luspatercept in Participants With Myelodysplastic Syndrome (MDS) and Anemia Not Receiving Blood Transfusions
Recruiting
The purpose of the study is to compare the efficacy and safety of Luspatercept vs epoetin alfa in the treatment of anemia in adults due to IPSS-R very low, low, intermediate-risk MDS in ESA-naïve participants who are non-transfusion dependent (NTD).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Kadlec Clinic Hematology and Oncology, Kennewick, Washington
Conditions: Myelodysplastic Syndromes
Strategy for Improving Stroke Treatment Response
Recruiting
SISTER is a Phase-II, prospective, randomized, placebo-controlled, blinded, dose finding trial that aims to determine the safety and preliminary efficacy of TS23, a monoclonal antibody against the alpha-2 antiplasmin (a2-AP), in acute ischemic stroke.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/18/2025
Locations: Harborview Medical Center, Seattle, Washington
Conditions: Ischemic Stroke