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

A Novel Probiotic-antibiotic Combination to Prevent Recurrent Urinary Tract Infections

Aging and Task-specific Training to Reduce Falls

Drug Effects on Mood and Behavior - Expectancy

rhPSMA-73 PET-MRI Imaging for the Detection of Prostate Cancer Among Men Who Are Otherwise Candidates for Active Surveillance

Dex +/- Caffeine Sedation in a Post-MRI Recovery in a Pediatric Population

Ivosidenib and Ruxolitinib in Patients With Advanced Myeloproliferative Neoplasms (MPNs) That Have an IDH1 Gene Mutation

R01.Aim 2.Study 1: IsoReach

Effect of Neural Constraints on Movement in Stroke

Mood Effects of Serotonin Agonists: Depression

Soy Isoflavones For Inner City Infants At Risk For Asthma (SIRA) Study

Antidepressant Effects of Nitrous Oxide

Intravesical Bupivacaine on Post-Operative Ureteroscopy Pain

Nitrous Oxide as Treatment for Fibromyalgia

Testing a Real-time Electronic Antiretroviral Adherence Monitoring Intervention

Intra-operative Loop Diuretics to Improve Same-day Discharge Rates After HoLEP

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