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ClinicalTrials.gov API

ClinicalTrials.gov (clinicaltrials.gov) has 3 public methods: get clinical trial by NCT number or title, list company trials and search clinical trials. Each costs 1 credit per completed run (1¢ with pay as you go); failed runs are free.

clinicaltrials.gov (opens in a new tab)

Unofficial. Not affiliated with or endorsed by ClinicalTrials.gov.

Methods

3

  • Get clinical trial by NCT number or title

    Returns the full public record of a ClinicalTrials.gov study, looked up by NCT number or by title (closest registered title for ambiguous titles).

    Returns title, official title, purpose, status, phase, sponsor, dates, eligibility, arms, treatments, outcomes, locations, contacts

    Readclinicaltrials.gov/get_trial

  • List company trials

    Lists ClinicalTrials.gov studies run or funded by a sponsor, newest start date first, with optional phase, status and condition filters.

    Returns trial title, NCT number, phase, status, conditions, start and primary completion dates, enrollment, study link

    Readclinicaltrials.gov/list_company_trials

  • Search clinical trials

    Finds ClinicalTrials.gov studies for a condition or medicine. You can filter by location, distance, recruitment status and phase. With a location, results are ordered by distance to the closest eligible site.

    Returns trial title, status, phase, sponsor, conditions, nearest site, distance, eligibility, contact, trial number, start date, link

    Readclinicaltrials.gov/search_trials