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

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

Optimizing the Floreciendo Sexual and Reproductive Health Workshop for Latina Teens and Female Caregivers: A Pilot

Tranexamic Acid for Second Trimester Dilation and Evacuation and Bleeding Outcomes

StuDy AimED at Increasing AlCohol AbsTinEnce

EEG Biomarkers for OUD: Diagnostic, Prognostic, and Predictive Applications

Error-enhanced Learning & Recovery in 2 & 3 Dimensions

LUNG-07: Advancing Precision-Based Lung Cancer Screening: Implementation, AI-Guided Risk Stratification, and Biomarker Integration (CREST AI)

Pulmonary Fibrosis Foundation Community Registry

TREAT-BE Study (Treatment With Resection and Endoscopic Ablation Techniques for Barrett's Esophagus)

KIDney Injury in Times of COVID-19 (KIDCOV)

Reducing Opioid Mortality in Illinois

Behavioral Economic Attributes of Recreation

MADRE (Mammograms Available Due to Research and Education)

Ejaculatory-Sparing HoLEP vs Standard HoLEP

Keeping it LITE: Exploring HIV Risk in Vulnerable Youth With Limited Interaction and Digital Health Intervention

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