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Source document generators for clinical trials: template libraries, eSource and protocol-driven generation compared

Zach Sawaged5 min read

Search for a source document generator for clinical trials and four different kinds of thing come back mixed together: free template libraries, eSource capture systems, sponsor-side document authoring tools, and protocol-driven generators. Only the last category takes a protocol and produces the site's source documents from it. The others either give you a blank template, capture data once a form already exists, or draft documents that are not site source at all. Here is how the categories differ, with the tools named.

Template libraries

Academic and CTSA hubs publish free Word and Excel templates for the documents a site needs for any study: visit checklists, eligibility checklists, adverse event logs, concomitant medication logs, protocol deviation logs, screening and enrollment logs, delegation of authority logs. Boston University's CRRO, UTMB's Office of Clinical Research, UAB's CCTS and the NIH NCCIH Clinical Research Toolbox all maintain sets of this kind.

These are static files. As Boston University's page puts it, they must be edited for each study to align with the IRB-approved procedures. The coordinator still reads the schedule of assessments and types every visit, window, procedure and lab panel into the template by hand. A template library saves you the formatting. It does not save you the transcription.

eSource capture systems

An eSource system replaces the paper source document with an electronic form that the coordinator fills in at the point of care, on a tablet or laptop, with edit checks, e-signatures and an audit trail. The data then transfers to the sponsor's EDC instead of being transcribed twice.

RealTime eSource, Jeeva eSource and Wemedoo's oomnia eSource are products in this category, and Florence eBinders offers fillable source forms inside its electronic investigator site file. By each vendor's own description, the visit templates in these systems are configured to the protocol by the site or the vendor's services team. RealTime describes protocol-specific templates built out in the eSource template; Jeeva describes visit-specific forms built to your protocol schedule and configured in days. None of them claims to read the protocol and generate the forms automatically.

The distinction matters because eSource is a way of filling in a source document, not a way of creating one. The protocol still has to be turned into a form before the first participant is seen, and in these systems that step is manual.

Document authoring and management tools

A separate set of AI products appears in the same search results because they generate clinical documents, just not source documents. TrialAssure LINK AI, Saama's AI-Powered Document Generator, Docuvera and Mpilot draft sponsor-side documents: protocols, clinical study reports, plain language summaries, patient safety narratives, informed consent forms. Evinova's Study Document Assistant helps sponsor teams answer site queries and identify protocol amendment revisions. Clario's Source Document Manager collects, redacts and translates source documents a site has already produced so they can be shared for review.

These tools are useful for the medical writer, the regulatory team or the imaging core lab. None of them produces the visit worksheet a coordinator uses to run a participant visit.

Protocol-driven source document generation

A protocol-driven generator starts from the finished protocol PDF and produces the site's source documents from it, without anyone retyping the schedule of assessments. This is the category Concordare is in.

Apta, Concordare's conversion engine, reads the protocol PDF and converts it into the Clinical Trial Protocol Model (CTPM), a structured model of every visit, window, procedure, eligibility criterion, lab panel and assessment. The study team reviews and approves the model. Structura then generates a source document for every visit, with the right procedures, fields and notes already in place, in the site's own templates and formats. When an amendment arrives, the affected documents regenerate from the updated model. In a June 2026 third-party assessment across 3,171 protocol data elements, Apta scored 99.62% precision. Concordare's published site figures are under five minutes from protocol upload to generated worksheets and a 90% reduction in source document creation time.

Concordare is not an eSource system. It does not capture data at the point of care and it does not replace the site's eSource or EDC. It produces the source documents themselves, which the site then fills in the way it already works: on paper, in its existing eSource platform, or alongside an EDC that Porta, Concordare's connector, builds from the same model. AI is used only at the conversion step. Every document is generated deterministically from the approved model, and every value traces back to a line in the protocol.

How to tell which one you need

  • You want a blank, GCP-aligned form to adapt by hand: a template library.
  • You already have your visit forms and want coordinators to fill them electronically with edit checks and an audit trail: an eSource system.
  • You need to draft a protocol, a CSR, a consent form or a plain language summary: a document authoring tool.
  • You have a final protocol and want the source documents for every visit produced from it, in your own templates, without transcription: a protocol-driven generator.
  • You run an eSource system and still build every study's forms by hand: a protocol-driven generator upstream of it, so the forms are derived from the protocol rather than typed in.

Definitions

Source document. The site's original record of a participant visit, from which case report form data is transcribed or against which it is verified. ICH E6 defines source documents as original documents, data and records.

eSource. Source data captured electronically at the point of care, in a system with an audit trail, rather than on paper and transcribed later. An eSource system is a way of recording source data, not a way of generating the forms the data goes into.

Source document generator. A tool that produces study-specific source documents from the protocol, so that visit names, windows, procedures, lab panels and timepoints are populated from the protocol rather than retyped.

Clinical Trial Protocol Model (CTPM). Concordare's machine-readable digital clinical trial protocol, extracted from the protocol PDF, reviewed by the study team, and used to generate source documents, EDC builds, billing grids and CTMS configuration. Full definition.

Concordare publishes how the CTPM is defined and how accurately it is extracted. To see a protocol converted and the source documents generated from it, request a demo.

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