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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Where Studies Run in Seattle

Top Trials Near Seattle

Chemotherapy (Decitabine in Combination With FLAG-Ida) and Total-Body Irradiation Followed by Donor Stem Cell Transplant for the Treatment of Adults With Myeloid Malignancies at High Risk of Relapse

Topical 10% Povidone-Iodine in Preventing White Spots

Donor Stem Cell Transplant With Treosulfan, Fludarabine, and Total-Body Irradiation for the Treatment of Hematological Malignancies

Study of Healthy Aging and Physical Function With Elamipretide

A Pilot Study to Evaluate Barhemsys for the Prevention of Postoperative Nausea and Vomiting in the Bariatric Surgery Population

Optimizing Pain Control in Transurethral Resection of the Prostate

Drug Excretion in Breast Milk

Implementation and Deliver of Lenacapavir for PrEP in a Community Pharmacy Setting

Single Session Narrative Therapy Study

PREVENT HPV -Related Cancers Trial

Feasibility/Acceptability of a Brief Motivational Intervention for Frequent/High-Intensity Cannabis Use

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

Building Research for Intervention Development in Gliosis and Eating Habits

Increasing Physical Activity for Adults With Multiple Sclerosis (MS)

Virtual Implicit Bias Reduction and Neutralization Training (VIBRANT)

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