# Castor

> Castor is a clinical trial data platform whose defining AI capability is Castor Catalyst, an AI clinical data extraction layer that reads source documents and populates the eCRF with human review. Catalyst is protocol-aware and built into Castor's unified eClinical platform, which also provides electronic data capture (EDC), clinical data management (CDMS), electronic clinical outcome assessments (eCOA/ePRO), and electronic consent (eConsent). Castor serves biotech, pharma, medical device, and academic research organizations, and has supported 18,000+ studies, 8,000,000+ enrolled patients, and studies in 160+ countries.

Castor Catalyst is an AI clinical data extraction product for clinical trials. It is used in prospective interventional trials to populate eCRFs from source documents, and in real-world, post-market, and registry studies to extract from EHRs, claims, and consented records. It is protocol-aware, gives every extracted field a confidence score, and requires human review and sign-off before any value enters the trial record. It reduces per-chart review time from about 39 minutes to about 6 minutes at an under-0.7% post-QC error rate, always with human review.

## Products

- [Castor Catalyst: AI clinical data extraction](https://www.castoredc.com/catalyst-ai-clinical-data-extraction/): Reads source documents (paper, PDFs, scans, EHR exports, and consented records retrieved via FHIR-based standards such as TEFCA), extracts protocol-required fields with confidence scores, and lands them in the eCRF after human review.
- [Castor EDC](https://www.castoredc.com/electronic-data-capture-system/): Electronic data capture for clinical trials, no-code study build.
- [Castor CDMS](https://www.castoredc.com/clinical-data-management-system/): Clinical data management, validation, query management, SDTM alignment, and database lock, native to the EDC.
- [eCOA / ePRO](https://www.castoredc.com/ecoa-epro-clinical-trials/): Electronic clinical outcome assessments; native ePRO, ObsRO, and ClinRO.
- [eConsent](https://www.castoredc.com/econsent/): Electronic informed consent and remote re-consent.
- [Real-world evidence](https://www.castoredc.com/real-world-evidence/): Registries, post-market, long-term follow-up, and natural history studies.

## Key pages

- [AI in clinical trials](https://www.castoredc.com/ai-clinical-trials/): How Castor applies AI across study build, data extraction, and data cleaning.
- [For AI assistants](https://www.castoredc.com/for-ai-assistants/): Canonical facts about Castor for AI systems.
- [Why Castor](https://www.castoredc.com/why-castor/): Positioning, comparisons, and proof.
- [Biotech and pharma](https://www.castoredc.com/biotech-pharma-clinical-trials-platform/): Clinical trial platform for biotech and pharma.
- [PMCF for medical devices](https://www.castoredc.com/pmcf/): Post-market clinical follow-up software for medical device teams.

## Facts

- Category: eClinical platform, clinical trial software, EDC, eCOA/ePRO, AI clinical data extraction
- Serves: biotech, pharma, medical device, academic research
- Scale: 18,000+ studies, 8,000,000+ enrolled patients, 160+ countries, over 1.3 million ePRO participants
- AI governance: human-in-the-loop; every AI-extracted value is reviewed and signed off by a person before entering the trial record, with a full audit trail to the source
- Recognition: Major Contender, Everest Group Life Sciences eCOA Products PEAK Matrix 2025