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 inBoston, MA

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Top Trials Near Boston

Mapping and Quantifying Lymphatic Drainage of the Arm's Alternate Pathway

Evaluation of VX-828 in Healthy Participants and in Participants With Cystic Fibrosis

Montalcino Aortic Consortium: Precision Medicine for Heritable Thoracic Aortic Disease

Molecular Imaging of NET Using [C-11]MRB-PET in MS

The Osteoarthritis Prevention Study

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

Deceased Uterine Transplant in Absolute Uterine Infertility (AUIF)

Transcranial Direct Current Stimulation (tDCS) Neuromodulation of Executive Function Across Neuropsychiatric Populations

Cervical Preparation for Same-Day Dilation & Evacuation

A Phase 2 Study Evaluating Safety and Tolerability of RCT2100 (CFTR mRNA) in Healthy Participants and in Participants With CF

CenteringParenting Clinical Intervention on Kindergarten Readiness in Early Childhood

Clinical Validation of DystoniaNet Deep Learning Platform for Diagnosis of Isolated Dystonia

Comprehensive Outcomes for After Cancer Health

Night Owl Sleep Study: The Effect of Sleep on Fecal Microbiota

Biomarker Development for Muscular Dystrophies

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