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

The Kidney's Response to Exercise in Heat, and the Impact of Vitamin B3 on This Response

Phase 1a Single Ascending Dose Study of MIB-725 in Healthy Adults

Impulsivity Domains and Subjective Response

Topical Netarsudil for the Prevention of Proliferative Vitreoretinopathy in Patients With Retinal Detachment

Investigating the Utility of Demyelination Tracer [18F]3F4AP in Controls and Multiple Sclerosis Subjects

Pilot Study to Identify the Mediators and Inflammatory Cell Surface Receptors Involved in Allergic Airway Inflammation

Identifying Oxytocin Deficiency in Adults With Pituitary Disease

Working Memory Training for People Aging with HIV

Assess Fibrin in Brains With AD/ADRD

An fMRI Investigation of the Effects of IV Lidocaine on Tinnitus

Transcranial Magnetic Stimulation Treatment for Alzheimer's Disease

Mapping Auricular Vagus Nerve Circuitry

Tracing the Metabolic Flux of Orally Administered NAD+ Precursors

Assessment of Synaptic Density in MS

Preliminary Evaluation of [68Ga]CBP8 in Healthy Individuals, Lung Cancer, and Idiopathic Pulmonary Fibrosis Patients

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