Clinicaltrials Get Study Record
clinicaltrials_get_study_recordRead-onlyIdempotent
Fetch the full study record for an NCT ID from ClinicalTrials.gov, returning protocol details, eligibility, outcomes, arms, interventions, contacts, and locations. Use optional caps to trim data.
Instructions
Fetch a single clinical trial study by NCT ID from ClinicalTrials.gov. Returns the full study record including protocol details, eligibility criteria, outcomes, arms, interventions, contacts, and locations. Optional locationLimit / outcomeLimit / referenceLimit / nearLocation parameters trim locations, outcomes, and references — original totals are preserved in filtersApplied only when a cap actually trims the set.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| nctId | Yes | NCT identifier — format `NCT` followed by 8 digits (e.g., `NCT03722472`). | |
| nearLocation | No | Filter returned locations to those within radius of (lat, lon) and sort by distance. Adds distanceMi to each location. Locations without published coordinates are dropped — most US sites carry them; international sites less reliably so. Distances reflect ClinicalTrials.gov geocoding granularity — typically city-centroid, not facility-level — so multiple sites in the same city resolve to near-identical distances. For broader geographic filtering across studies, use clinicaltrials_search_studies with geoFilter. | |
| outcomeLimit | No | Optional cap on the number of secondary and other outcomes returned. Omit for no cap (full upstream lists). Primary outcomes are never capped. Original totals preserved in filtersApplied.totalSecondaryOutcomes / totalOtherOutcomes only when the cap trims a list. | |
| locationLimit | No | Optional cap on the number of locations returned. Omit for no cap (full upstream list). Pairs naturally with nearLocation for narrowing a large multi-site trial. Original total preserved in filtersApplied.totalLocations only when the cap trims the list. | |
| referenceLimit | No | Optional cap on the number of references returned. Omit for no cap (full upstream list). Original total preserved in filtersApplied.totalReferences only when the cap trims the list. seeAlsoLinks are never capped. |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| error | No | Present when the call failed. Absent on success. | |
| study | No | Full study record with caller-requested filters already applied to locations and outcomes. Top-level keys: protocolSection (identification, status, sponsor, conditions, design, arms/interventions, outcomes, eligibility, contacts/locations), derivedSection (MeSH-normalized terms), hasResults, documentSection. The heavy resultsSection is omitted — see resultsSummary for counts and clinicaltrials_get_study_results for full results data. Use clinicaltrials_get_field_definitions to explore the schema. | |
| filtersApplied | No | Metadata about the filtering applied to `study`. | |
| resultsSummary | No | Compact counts of posted results, present when hasResults is true. The full resultsSection is intentionally omitted from this record-level tool — fetch it via clinicaltrials_get_study_results or the clinicaltrials://{nctId} resource. |