Studies list
Performs a search and returns full studies or selected fields for a set of study records in JSON or CSV, paginated.
Search ApiSample: format, pageSize, query.cond
1 credit / call
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Back to providers
Provider profileAvailable in QVeris
ClinicalTrials.gov
ClinicalTrials.gov provides study records, registration, and results information for clinical trials with search functionality.
Search & NewsHealth Life ScienceMedical RecordsScience Health Public
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Studies metadata
Returns detailed definitions, like data elements for a single study record, and the study data model.
Health & Life ScienceClinical Trial MetadataScience, Health & Public Data
1 credit / call
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Data Model Fields
Returns study data model fields.
StudiesSample: includeIndexedOnly, includeHistoricOnly
1 credit / call
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Single Study
Returns data of a single study.
StudiesSample: nctId
1 credit / call
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Studies
Returns data of studies matching query and filter parameters. The studies are returned page by page. If response contains `nextPageToken`, use its value in `pageToken` to get next page. The last page will not contain `nextPageToken`. A page may have empty `studies` array. Request for each subsequent page must have the same parameters as for the first page, except `countTotal`, `pageSize`, and `pageToken` parameters. If neither queries nor filters are set, all studies will be returned. If any query parameter contains only NCT IDs (comma- and/or space-separated), filters are ignored. `query.*` parameters are in [Essie expression syntax](/find-studies/constructing-complex-search-queries). Those parameters affect ranking of studies, if sorted by relevance. See `sort` parameter for details. `filter.*` and `postFilter.*` parameters have same effect as there is no aggregation calculation. Both are available just to simplify applying parameters from search request. Both do not affect ranking of studies. Note: When trying JSON format in your browser, do not set too large `pageSize` parameter, if `fields` is unlimited. That may return too much data for the browser to parse and render.
StudiesSearch ApiSample: sort, fields, pageSize
1 credit / call
Unknown
Latency unavailable
Studies search areas
Returns search areas for study documents.
Search Api
1 credit / call
Unknown
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Search Areas
Search Docs and their Search Areas.
StudiesSearch Api
1 credit / call
Unknown
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Data version
Returns the date when the ClinicalTrials.gov dataset was posted. Check dataTimestamp field in the returned JSON.
Health & Life ScienceClinical Trial Data VersioningScience, Health & Public Data
1 credit / call
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Version
API and data versions. API version follows [Semantic Versioning 2.0.0 Schema](https://semver.org/spec/v2.0.0.html). Data version is UTC timestamp in `yyyy-MM-dd'T'HH: mm: ss` format.
Version
1 credit / call
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Get API version and data timestamp
Retrieve the dataTimestamp field to check if the daily data refresh on ClinicalTrials.gov has completed. Data is refreshed daily Monday through Friday by 9 a.m. ET.
ClinicaltrialsAPI
1 credit / call
Unknown
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