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 inSan Antonio, TX

Filter by Category

Where Studies Run in San Antonio

Top Trials Near San Antonio

A Study to Evaluate the Effect of Moderate or Severe Hepatic Impairment on the Pharmacokinetics (PK) of Inavolisib

Use of CA125 and Complementary Biomarkers for the Early Detection of Ovarian Cancer in Low Risk Women

Phosphatidylethanol and Other Ethanol Consumption Markers

Quitxt Mobile Text Messaging Cessation Research Study

Nordic Spirit Pouch Nicotine Pharmacokinetics Abuse Liability

Wound Healing Following Tooth Extraction and Ridge Preservation Using OsteoGen®

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

Combining Stellate Ganglion Block With Prolonged Exposure for PTSD

Testing an Enhanced Digital Delivery Model for Inherited Cancer Genetic Testing in Young Adults With Cancer

Safety and Immunogenicity of a Self-Amplifying RNA Vaccine Against Crimean-Congo Hemorrhagic Fever

Using SnapshotNIR With Provocative Leg Maneuver for PAD Assessment

Behavioral Economic Intervention to Improve HIV Behaviors in Sexual Minority Individuals

Sex-specific Determinants of Early-phase Recovery From Skeletal Muscle Disuse

Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis

Ultrasound for Healthy Aging

Also Check Trials In...