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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 inPhiladelphia, PA

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Where Studies Run in Philadelphia

Top Trials Near Philadelphia

Study of Biodistribution, Metabolism, Excretion and Brain Uptake of 11C-HY-2-15

Validation of Oxygen Nanosensor in Mitochondrial Myopathy

Comparison of the Short-Term Effect of Dietary Carbohydrate Restriction Versus Exogenous Ketone Supplementation on Myocardial Glucose Suppression and Timing to Achieve a State of Ketosis Using FDG PET/CT Serial Imaging

Applying pGz in Mitochondrial Disease

Low Dose Fat-Induced Insulin Resistance

Neoadjuvant Pembrolizumab and Lenvatinib for Renal Cell Carcinoma

Localizing Epileptic Networks Using MRI and iEEG

Imaging Sex Differences in Smoking-Induced Pulmonary Inflammation

Multi-System Analysis of Opioid Receptor Binding

Validation of Nanosensor Oxygen Measurement

Neuroinflammation Imaging in AD

Effect of Nutritional Ketosis on Alcohol Metabolism

PET Tau - Neurodegenerative Disease Imaging

Ketone Ester Intervention in Alcohol Use Disorder

Effects Ketone Supplement and Alcohol on Brain Metabolism

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