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 inBaltimore, MD

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Where Studies Run in Baltimore

Top Trials Near Baltimore

Defining Neurobiological Links Between Substance Use and Mental Illness

Investigation of Psychedelic Effects in Psychoactive Substances

A Study to Investigate the Pharmacokinetics of Different Formulations and Safety of AZD5004 in Healthy Participants Aged 18 to 55 Years

Magnetic Resonance Spectroscopy Studies of Cardiac Muscle Metabolism

Change in Social Media Use and Well-being Among College Students Receiving a Two-week Exercise or Mindfulness Intervention

Local Bisphosphonate Effect on Recurrence Rate in Extremity Giant Cell Tumor of Bone

Effect of Cannabis on Cigarette Use Behavior

Identification and Validation of Epigenetic Biomarkers of PMDD

Outcome Inference in the Sensory Preconditioning Task in Opioid-Use Disorder

Familial Mediterranean Fever and Related Disorders: Genetics and Disease Characteristics

CT TAVR Abdomen Study

Signature Development and Validation Protocol for an Epigenetic Assay in Diagnosing Lung Cancer

Developing a Clinical Outcome Assessment for Opioid Craving

Evaluate the Effect of Atorvastatin on Cerebrovascular Reactivity in Mild Cognitive Impairment (MCI)

Collection of Bone Marrow Aspirate From Normal Volunteers

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