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 inDenver, CO

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Where Studies Run in Denver

Top Trials Near Denver

Open Access Database of Standing Full Body Radiographs in Asymptomatic Volunteers

Effects of High Altitude on AMPK Activation

Educate and Improve Underserved Populations' Uptake and Completion of the HPV Vaccine

Pilot Study of Suction as a Mechanism of IUD Expulsion With Concomitant Menstrual Cup Use

Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer

Mobile Health for Adherence in Breast Cancer Patients

Chronic Cannabis Smoking, Oxidative Stress and the Pulmonary Innate Immune Response

Ventral or Inguinal Hernia, Robotically Repaired With OviTex Mesh

A Global Study of the PETAL Consortium

PPROM Registry (Preterm Premature Rupture of Membranes)

Maternal Newborn Health Registry

Collecting Blood Samples From Patients With and Without Cancer to Evaluate Tests for Early Cancer Detection

Pre- and Post-operative TEG Indices in Patients With or Without Adenocarcinoma Undergoing Surgical Resection

TrialNet Pathway to Prevention of T1D

Blood Flow Restriction Training in Patients With Lower Extremity Fractures

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