Is GuineaPig free to use?

Yes, completely free. GuineaPig pulls data from ClinicalTrials.gov and adds compensation estimates, eligibility matching, and category filters to make it easier to browse. We don't charge volunteers or collect payment information.

How does GuineaPig estimate compensation?

Pay ranges are rough estimates based on the study's phase, duration, and typical industry rates. Phase 1 inpatient studies tend to pay the most because they require overnight stays. These are not confirmed by sponsors — always contact the study team directly for the actual compensation.

How often is trial data updated?

Trial listings are pulled from ClinicalTrials.gov in real time. New studies appear as soon as sponsors register them with the NIH. Study status, enrollment counts, and location data are updated whenever sponsors submit changes to the registry.

Does GuineaPig screen me or sign me up?

No. GuineaPig is a search tool only. When you find a trial you're interested in, click 'View on ClinicalTrials.gov' to get the study team's contact information. You'll go through the sponsor's own screening and enrollment process.

Clinical Trials inSeattle, WA

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Top Trials Near Seattle

A Phase 2 Study Evaluating Safety and Tolerability of RCT2100 (CFTR mRNA) in Healthy Participants and in Participants With CF

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

A 3-way Crossover Clinical Investigation to Assess the Performance of Two Different Sized Polyurethane Condoms Versus a Latex Condom in Healthy Monogamous Couples.

School-based Paraeducator Education for Engagement at Recess

Local Bisphosphonate Effect on Recurrence Rate in Extremity Giant Cell Tumor of Bone

Hemophilia A Research Program

Using Shared Decision Making to Improve Family Media Use Planning

Clinical and Genetic Evaluation of Individuals With Undiagnosed Disorders Through the Undiagnosed Diseases Network

Optimizing Pain Control in Transurethral Resection of the Prostate

Optimizing Infection Prophylaxis Prior to Shoulder Surgery

Alcohol-focused Support of Survivors in Sororities Training (ASSIST) - Pilot

Effect of High-Intensity Exercise to Attenuate Cognitive Function Limitations and Train Exercise Habits in Older People Living With HIV

Building Research for Intervention Development in Gliosis and Eating Habits

A Phase 3 Study of Revaccination in Subsequent Pregnancies With Bivalent RSV Vaccine and Duration of Protection of a Single Dose

Systems Analysis and Improvement to Optimize Opioid Use Disorder Care Quality and Continuity for Patients Exiting Jail

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