Search United States clinical trial records.
Look up public ClinicalTrials.gov listings by condition, city, sponsor, intervention, recruitment status, phase, study type, or NCT ID. Every result links to the official record.
Independent directory. Not affiliated with ClinicalTrials.gov, NIH, or NLM.
What this directory is tracking right now
Live counts from our local index of U.S. ClinicalTrials.gov records in active statuses. One study can appear under several conditions, so these are per-condition coverage figures, not registry-wide totals.
Actively tracked U.S. trials
21,684
Statuses follow the official registry lifecycle — see the status guide for what each value means and why counts shift.
Most indexed conditions
Each condition page shows phase distribution, top sponsors, top locations, recent records, and hand-written search guidance for that condition.
Learn to use the registry well
Plain-language guides to registry mechanics — written and maintained by this directory's editorial team, with official sources linked throughout.
How to read a study record
NCT IDs, statuses, design fields, eligibility, locations, and results — field by field.
Read →Phases explained
What Phase 1–4 each measure, and why “N/A” is a normal phase value.
Read →Recruitment status and timing
Every status value, why registry statuses lag, and how to time outreach.
Read →Find trials near you
A five-step location search process and what to prepare before calling a site.
Read →All guides: browse the guide library, including the healthy volunteer and payment guide and the glossary.
Browse by condition, location, sponsor, status, or therapy
Navigational entry points only. No recommendations, eligibility judgments, or rankings.
Objective fields only
Status, phase, study type, sponsor, intervention, age range, sex, and listed U.S. locations.
Official record first
Every result links to the official study page, which remains the source of truth for availability and contacts.
No recommendations
No medical advice, credibility scores, eligibility judgments, or AI-generated trial summaries.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.