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Washington Paid Clinical Trials
A listing of 1729 clinical trials in Washington actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
781 - 792 of 1729
Washington is currently home to 1729 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 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
Featured Trial
Buy Retatrutide Online Through Celia
Recruiting
Retatrutide (formerly M25) is an investigational peptide being studied for its potential in supporting weight management and metabolic health. It acts on GLP-1, GIP, and glucagon receptors to influence appetite, energy regulation, and fat metabolism.
Conditions:
Healthy
Featured Offer
Find the Best GLP-1 Weight Loss Providers (2025)
Recruiting
Cutting-edge GLP-1 treatments like semaglutide and tirzepatide are helping thousands lose weight with medically guided support. But with so many online providers, how do you know which programs are trusted, affordable, and right for you?
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
We reviewed the top GLP-1 brands of 2025 — comparing pricing, prescription process, shipping, pharmacy partners, and real user ratings — to help you find a safe, convenient, and effective path toward your weight-loss goals.
- 100% online programs
- Licensed U.S. clinicians
- Fast shipping & flexible payments
See the rankings & choose the GLP-1 provider that fits your life.
Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Featured Trial
Depression Clinical Trial
Recruiting
Join us in researching a potential investigational treatment for Depression. Reimbursement for study-related expenses may be available to you.
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Qualifying participants:
•Are between 18-65
•Have been experiencing a major depressive episode for at least a month
Conditions:
Depression
Major Depressive Disorder
Depressive Disorder
Depressive Symptoms
Depressive Disorder
Testing the Use of Ado-Trastuzumab Emtansine Compared to the Usual Treatment (Chemotherapy With Docetaxel Plus Trastuzumab) or Trastuzumab Deruxtecan for Recurrent, Metastatic, or Unresectable HER2-Expressing Salivary Gland Cancers
Recruiting
This phase II trial compares the effect of usual treatment of docetaxel chemotherapy plus trastuzumab, to ado-emtansine (T-DM1) in patients with HER2-postive salivary gland cancer that has come back (recurrent), that has spread from where it first started (primary site) to other places in the body, or cannot be removed by surgery (unresectable). This trial is also testing how well trastuzumab deruxtecan works in treating patients with HER2-low recurrent or metastatic salivary gland cancer. Trast... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Metastatic Salivary Gland Carcinoma, Recurrent Salivary Gland Carcinoma, Stage III Major Salivary Gland Cancer AJCC v8, Stage IV Major Salivary Gland Cancer AJCC v8, Unresectable Salivary Gland Carcinoma
Testing the Addition of Stereotactic Radiation Therapy With Immune Therapy for the Treatment of Patients With Unresectable or Metastatic Renal Cell Cancer, SAMURAI Trial
Recruiting
This phase II trial tests whether the addition of radiation to the primary tumor, typically given with stereotactic ablative radiation therapy (SABR), in combination with standard of care immunotherapy improves outcomes in patients with renal cell cancer that is not recommended for surgery and has spread from where it first started (primary site) to other places in the body (metastatic). Radiation therapy uses high energy photons to kill tumor cells and shrink tumors. Stereotactic body radiation... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Virginia Mason Medical Center, Seattle, Washington
Conditions: Metastatic Renal Cell Carcinoma, Stage III Renal Cell Cancer AJCC v8, Stage IV Renal Cell Cancer AJCC v8, Unresectable Renal Cell Carcinoma
Testing the Addition of the Chemotherapy Drug Lomustine (Gleostine) to the Usual Treatment (Temozolomide and Radiation Therapy) for Newly Diagnosed MGMT Methylated Glioblastoma
Recruiting
This phase III trial compares the effect of adding lomustine to standard chemotherapy with temozolomide and radiation therapy versus temozolomide and radiation therapy alone in shrinking or stabilizing newly diagnosed MGMT methylated glioblastoma. MGMT methylated tumors are more likely to respond to temozolomide chemotherapy. Temozolomide is in a class of medications called alkylating agents. It works by damaging the cell's DNA and may kill tumor cells and slow down or stop tumor growth. Lomusti... Read More
Gender:
ALL
Ages:
Between 18 years and 70 years
Trial Updated:
07/14/2025
Locations: Virginia Mason Medical Center, Seattle, Washington
Conditions: Glioblastoma, Gliosarcoma
Testing the Addition of the Drug Relugolix to the Usual Radiation Therapy for Advanced-Stage Prostate Cancer, The NRG Promethean Study
Recruiting
This phase II trial compares the usual treatment of radiation therapy alone to using the study drug, relugolix, plus the usual radiation therapy in patients with castration-sensitive prostate cancer that has spread to limited other parts of the body (oligometastatic). Relugolix is in a class of medications called gonadotropin-releasing hormone (GnRH) receptor antagonists. It works by decreasing the amount of testosterone (a male hormone) produced by the body. It may stop the growth of cancer cel... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: FHCC at EvergreenHealth, Kirkland, Washington
Conditions: Oligometastatic Prostate Carcinoma, Prostate Adenocarcinoma, Stage IVB Prostate Cancer AJCC v8, Prostate Ductal Adenocarcinoma, Prostate Intraductal Carcinoma
Comparing Cisplatin Every Three Weeks to Cisplatin Weekly When Combined With Radiation for Patients With Advanced Head and Neck Cancer
Recruiting
This phase II/III trial compares whether cisplatin given weekly with radiation therapy is better tolerated than cisplatin given every three weeks with radiation therapy for the treatment of head and neck cancer that has spread to other places in the body (advanced). The second part of this study will also help to find out if the cisplatin given weekly approach will extend patients' life by at least the same amount of time as the cisplatin given every three weeks approach. Cisplatin is in a class... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: FHCC Overlake, Bellevue, Washington
Conditions: Advanced Head and Neck Squamous Cell Carcinoma, Advanced Hypopharyngeal Squamous Cell Carcinoma, Advanced Laryngeal Squamous Cell Carcinoma, Advanced Oropharyngeal Squamous Cell Carcinoma, Clinical Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Clinical Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8, Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8, Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8
Two Studies for Patients With Unfavorable Intermediate Risk Prostate Cancer Testing Less Intense Treatment for Patients With a Low Gene Risk Score and Testing a More Intense Treatment for Patients With a Higher Gene Risk Score, The Guidance Trial
Recruiting
This phase III trial uses the Decipher risk score to guide therapy selection. Decipher score is based on the activity of 22 genes in prostate tumor and may predict how likely it is for recurrent prostate cancer to spread (metastasize) to other parts of the body. Decipher score in this study is used for patient selection and the two variations of treatment to be studied: intensification for higher Decipher score or de-intensification for low Decipher score. Patients with higher Decipher risk scor... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Virginia Mason Medical Center, Seattle, Washington
Conditions: Prostate Adenocarcinoma
Two Studies for Patients With High Risk Prostate Cancer Testing Less Intense Treatment for Patients With a Low Gene Risk Score and Testing a More Intense Treatment for Patients With a High Gene Risk Score, The PREDICT-RT Trial
Recruiting
This phase III trial compares less intense hormone therapy and radiation therapy to usual hormone therapy and radiation therapy in treating patients with high risk prostate cancer and low gene risk score. This trial also compares more intense hormone therapy and radiation therapy to usual hormone therapy and radiation therapy in patients with high risk prostate cancer and high gene risk score. Apalutamide may help fight prostate cancer by blocking the use of androgen by the tumor cells. Radiatio... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Virginia Mason Medical Center, Seattle, Washington
Conditions: Prostate Adenocarcinoma, Stage III Prostate Cancer AJCC v8, Stage IVA Prostate Cancer AJCC v8
Testing the Addition of the Drug Apalutamide to the Usual Hormone Therapy and Radiation Therapy After Surgery for Prostate Cancer, INNOVATE Trial
Recruiting
This phase III trial studies whether adding apalutamide to the usual treatment improves outcome in patients with lymph node positive prostate cancer after surgery. Radiation therapy uses high energy x-ray to kill tumor cells and shrink tumors. Androgens, or male sex hormones, can cause the growth of prostate cancer cells. Drugs, such as apalutamide, may help stop or reduce the growth of prostate cancer cell growth by blocking the attachment of androgen to its receptors on cancer cells, a mechani... Read More
Gender:
MALE
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Legacy Salmon Creek Hospital, Vancouver, Washington
Conditions: Prostate Adenocarcinoma, Stage I Prostate Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage III Prostate Cancer AJCC v8, Stage IVA Prostate Cancer AJCC v8
Tolerability Study of Trichostatin A In Subjects With Relapsed or Refractory Hematologic Malignancies
Recruiting
The aim of this study is to investigate the safety and tolerability of trichostatin A in individuals with relapsed or refractory hematologic malignancies.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Vanda Investigational Site, Seattle, Washington
Conditions: Relapsed or Refractory Hematologic Malignancies
Phase 1/2 Study of MRTX849 in Patients With Cancer Having a KRAS G12C Mutation KRYSTAL-1
Recruiting
This study will evaluate the safety, tolerability, drug levels, molecular effects, and clinical activity of MRTX849 (adagrasib) in patients with advanced solid tumors that have a KRAS G12C mutation.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Fred Hutchinson Cancer Research Center, Seattle, Washington
Conditions: Advanced Cancer, Metastatic Cancer, Malignant Neoplastic Disease
Bimatoprost as a Treatment for Graves' Orbitopathy
Recruiting
Testing whether Bimatoprost, a topical eye drop used for glaucoma, can be used to induce periorbital fat atrophy in patients with Graves' disease
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: University of Washington, Seattle, Washington
Conditions: Graves Ophthalmopathy
Diagnostic and Therapeutic Applications of Microarrays in Liver Transplantation
Recruiting
INTERLIVER is a prospective observational study of the relationship of the molecular phenotype of 300 liver transplant biopsies to the histologic phenotype and the clinical features and outcomes. A segment of a biopsy performed as standard-of-care for indications, or by center protocol, will be used for gene expression study.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/14/2025
Locations: Division of Transplant Surgery, University of Washington, Seattle, Washington
Conditions: Liver Dysfunction
