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 inChicago, IL

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Where Studies Run in Chicago

Top Trials Near Chicago

InSpace Accelerated Rehabilitation Study

MiSight 1 Day Post-Approval Study for Effectiveness and Visual Symptoms

Dysbiosis & Long COVID

StuDy AimED at Increasing AlCohol AbsTinEnce

Early Intervention to Promote Cardiovascular Health of Mothers and Children

Pathophysiology of Circadian Rhythm Delayed Sleep Wake Phase Disorder

PROspective Study of Mothers' and Infants' Social and Epidemiologic Determinants of Health

Evaluate the Continued Safety and Performance of the Foot and Ankle Products

EAT: A Reliable Eating Assessment Technology for Free-living Individuals

Technology-Enhanced Asthma Care in Children at Clinic and Home Study

Lung Cancer Screening in High-risk Black Individuals

Evaluating Wearable Smart Sensors for Continuous Measurement of Vital Signs in ICU Patients

Preoperative Weight Loss for Open Abdominal Wall Reconstruction

Fostering Optimal Regulation of Emotion for Prevention of Secondary Trauma (FOREST)

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

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