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 inLos Angeles, CA

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Where Studies Run in Los Angeles

Top Trials Near Los Angeles

Comparing Two School-Based Sleep Health Interventions To Promote Sleep Quality in Youth

Effect of Gerofit Exercise on Cognition in Older Veterans

Intracranial Neurophysiological Signatures of Fear and Anxiety in Humans

Randomized Phase II Trial of Targeted Radiation With no Castration for Mcrpc

A Study to Assess the Adverse Events and How Oral Emraclidine Moves Through the Body of Healthy Elderly Adult Participants

Iron Deficiency Anemia (IDA) and the Brain

Effectiveness of Dual Light Electric Toothbrush vs. Manual Toothbrush in Orthodontic Patients Undergoing Oral Surgery

Neurophysiologic Biomarkers in Rett Syndrome

Brain Health in Breast Cancer Survivors

Natural History Study of Individuals With Autism and Germline Heterozygous PTEN Mutations

Childhood Cancer Survivor Study

Irritable Bowel Syndrome and Control Volunteers: Diet Challenge

Improving Behavioral Health for Caregivers and Children After Pediatric Injury

Association Between Exercise, Patient-Reported Outcomes, and Clinical Events in Adult Cancer Survivors

A 3-way Crossover Clinical Investigation to Assess the Performance of Two Different Sized Polyurethane Condoms Versus a Latex Condom in Healthy Monogamous Couples.

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