Frequently Asked Questions

A clinical trial is a research study involving human volunteers that aims to answer specific health questions. Trials test new treatments, drugs, medical devices, or new ways of using existing treatments. They are carefully designed, reviewed, and approved before participants are enrolled.

Phase 1: Tests safety and dosage in a small group (20–100 people). Often involves healthy volunteers.
Phase 2: Tests effectiveness and side effects in a larger group (100–300 patients).
Phase 3: Compares the new treatment to standard care in a large group (数百–数千人).
Phase 4: Monitors long-term effects after the treatment is approved and on the market.

All clinical trials must follow strict ethical and regulatory guidelines. Before joining, you'll go through an informed consent process that explains the risks, benefits, and what participation involves. You can leave a trial at any time, for any reason. However, there are always some risks — these will be clearly explained before you agree to take part.

It depends on the type of trial. Phase 1 healthy volunteer studies and bioequivalence trials typically offer compensation — often £500–£3,000 for your time and inconvenience. Later-phase trials for patients with specific conditions usually don't pay, but your travel costs may be reimbursed. TrialConnect clearly labels compensated studies.

Yes. You have the right to withdraw from any clinical trial at any time, without giving a reason. This will not affect your usual medical care. The research team will typically ask you to come in for a final check-up.

Yes, completely. Searching, browsing, and viewing trial details costs nothing. No account is needed. TrialConnect will always be free for patients and clinicians.

All trial data is sourced from ClinicalTrials.gov, the US National Library of Medicine's registry of clinical studies. It contains over 475,000 studies from 220 countries. Data is updated daily.

No. Your searches stay in your browser. TrialConnect does not track, store, or share any personal health information. No account or registration is required.

No. TrialConnect is an information and discovery tool. It helps you find trials, but it does not provide medical advice, diagnosis, or treatment recommendations. Always discuss trial options with your healthcare team.

Each trial card on TrialConnect includes contact details for the research site or sponsor — usually a phone number and email. Click the contact links to get in touch directly. No intermediary is involved.

TrialConnect is an independent project built by a clinical development professional. See the About page for more.

These are clinical trials (usually Phase 1 or bioequivalence) that need healthy volunteers. Participants are compensated for their time and any inconvenience. Studies typically involve a short stay at a clinical research unit, plus follow-up visits.

Most paid studies require healthy adults aged 18–55. Specific requirements vary — some studies need particular demographics, non-smokers, or specific BMIs. Each study listing includes its eligibility criteria.

Compensation typically ranges from £500 to £3,000+ per study, depending on the length of stay, number of visits, and type of study. Phase 1 studies tend to pay more than bioequivalence studies.