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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Where Studies Run in Boston

Top Trials Near Boston

Self-Adjusted Nitrous Oxide: A Feasibility Study in the Setting of Vasectomy

Establishing Walking-related Digital Biomarkers in Rare Childhood Onset Progressive Neuromuscular Disorders

Impact of Sex and Age on Non-visual Light Input That Affects Sleep and Circadian Rhythms

The Osteoarthritis Prevention Study

Gamma Light and Sound Stimulation to Prevent Dementia in Cognitively Normal People at Risk for Alzheimer's Disease

Targeting Specific Brain Networks to Treat Specific Symptoms in Depression

School Inner City Air Study

Deceased Uterine Transplant in Absolute Uterine Infertility (AUIF)

An Empowering Parent Training Intervention to Increase Physical Activity in Preschool Aged Children With Autism

High-Intensity Interval Exercise in Young Adult Survivors of Pediatric Brain Tumors: A Pilot Feasibility Study

Ultrasound Therapy In Cardiac Amyloidosis

PET Brain Imaging in Multiple Sclerosis, Alzheimer's Disease, and Other Neurological and Neuropsychiatric Diseases

An fMRI Investigation of the Effects of IV Lidocaine on Tinnitus

Music Use in Parturients Admitted to Labor & Delivery

Decompression Versus Decompression and Fusion

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