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

Filter by Category

Where Studies Run in Denver

Top Trials Near Denver

Exercise Adherence and Cognitive Decline: Phase 2

Effect of Omalizumab in the Skin of Food Allergy Patients

Deep Functional Phenotyping of the ALA Lung Health Cohort

A Research Study Looking at How Different Doses of Study Medicine (Inno8) Work in the Body of People With Haemophilia A

Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy (CADASIL) Study

The Human Trisome Project

TrialNet Pathway to Prevention of T1D

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

ProACT Post-Approval Study

Effect of High-Intensity Exercise to Attenuate Cognitive Function Limitations and Train Exercise Habits in Older People Living With HIV

Ventral or Inguinal Hernia, Robotically Repaired With OviTex Mesh

Alveolar Macrophage Programming Following Endotoxin Exposure

InSpace Accelerated Rehabilitation Study

Contraceptive Efficacy Study of Ovaprene

Blood Samples for the Study of Peanut, Tree Nut and Other Food Allergies

Also Check Trials In...