Study document templateUpdated October 10, 2026

Investigator site file (ISF) index template

The ISF is where a site keeps the documents that show the trial was run to protocol and GCP. This index gives you a 13-folder structure based on the ICH E6 essential documents, with when each item is filed and which records Capture can export for it.

  • 13-folder index
  • Filing timing per item
  • Paper or electronic

Free sandbox · No credit card · 21 CFR Part 11 aligned

Investigator site file · Site 002
ABC-201_Site002_ISF_Index.xlsx3/6 complete
  1. 1

    Protocol and amendments

    Complete
  2. 3

    Ethics committee / IRB

    Approval letter v2 filed

    Complete
  3. 5

    Informed consent

    Version 3 pending approval

    Draft
  4. 6

    Investigator and staff

    Complete
  5. 9

    Investigational product

    Draft
  6. 12

    Monitoring and correspondence

    To do
Demo index, not a real site

Key points

  • ICH E6 section 8 lists the essential documents that individually and together allow evaluation of how a trial was conducted and the quality of the data. The investigator and sponsor each keep their own set.
  • The ISF holds the investigator or institution's copy: the protocol, approvals, signed consents, staff records, agreements, product accountability, safety reports and correspondence.
  • ICH groups documents by when they are generated: before the trial starts (8.2), during conduct (8.3) and after completion or termination (8.4).
  • The ISF is not the database. Study data, queries and audit trail live in the EDC; the ISF holds the regulatory and operational records around it.
  • ICH E6(R3), adopted in 2025, refers to essential records rather than essential documents. Check which version your regulator and sponsor apply, and let the sponsor's file plan decide the final structure.

What it is

What belongs in an investigator site file

The ISF has one job: to let someone who was not there, such as a monitor, auditor or inspector, reconstruct what the site did and prove it was authorised to do it. Every document either shows permission (ethics approval, regulatory authorisation, signed agreement), qualification (CVs, training, licences), consent (approved forms and signed originals), control of the product (accountability, storage), safety handling (SAE reports and sponsor notifications), or oversight (monitoring and correspondence).

Sponsors usually supply a site binder or electronic folder structure at site initiation, and that structure takes precedence. The index below is a neutral starting point for investigator-initiated studies or for checking a sponsor's structure against ICH E6. For the sponsor-side master file and how it differs from the data system, see EDC versus eTMF; for what inspectors look at in the data itself, see the FDA inspection checklist.

Contemporaneous and attributable

File documents as they are generated, with dates and signatures, and keep superseded versions with the date they were replaced. A site file assembled just before a monitoring visit usually shows gaps that cannot be repaired, such as a delegation log signed after the person started work.

Source documents are not always in the ISF

Medical records and participant-level source usually stay in the clinical record, with the ISF holding the screening and enrolment logs and a note of where source is kept. Confidential participant identification lists stay locked, apart from the study data.

ISF completeness · Site 002 (demo)

Folders complete

9 of 13

Expiring within 60 days

2

  • Ethics approval, current protocol versionFiled 12 Mar
  • Signed delegation log, all staff
  • Staff GCP training records2 certificates expire soon
  • Laboratory normal ranges, current
Demo data

Template

ISF index: folders, contents and filing timing

#FolderTypical contentsFiled
1Protocol and amendmentsSigned protocol and signature page; each amendment; sample CRF or eCRF specificationBefore, then on change
2Investigator's brochure and product informationCurrent brochure or product information and each updateBefore, then on update
3Ethics committee or IRBSubmissions, approval letters, approved participant materials, committee composition, continuing reviewBefore, then during
4Regulatory authorityAuthorisation or notification where required, with correspondenceBefore, then during
5Informed consentApproved consent forms by version and language, signed originals, record of consent processBefore, then during
6Investigator and staffSigned CVs, licences, GCP training, delegation log, signature specimen sheetBefore, then on staff change
7AgreementsClinical trial agreement, financial agreement, insurance and indemnity statementsBefore
8Laboratory and facilitiesNormal ranges, laboratory accreditation, equipment calibration recordsBefore, then on update
9Investigational productShipment records, accountability log, storage temperature records, returns and destruction, instructions for handlingDuring, then after
10Safety reportingSAE reports, sponsor safety notifications, annual safety reports sent to the committeeDuring
11Participant recordsScreening and enrolment logs, participant identification list (confidential), CRF or eCRF access recordsDuring
12Monitoring and correspondenceMonitoring visit log, follow-up letters, notes to file, relevant emails and callsDuring
13Close-outFinal product reconciliation, completion notification to the committee, archiving record, final reportAfter

Based on the ICH E6(R2) section 8 essential documents list. Your sponsor's file plan may number and group items differently; follow it where one exists.

What Capture can produce

Records from the study system that belong in the file

Capture is the EDC, not a document management system, so it does not replace the ISF. It does produce several records that sites and sponsors file in it, and it keeps the data side of inspection readiness in one audit trail.

  • A blank eCRF PDF (cover page, form index, visit-by-form matrix and every approved form printed empty) for ethics submissions and folder 1.
  • Signed consent exported as PDF with signature data, timestamps and the audit trail, for folder 5 where your procedures allow an electronic copy.
  • Data and audit trail exports, with a data dictionary and an export log, to support monitoring and archiving.
  • Role-based access, with site coordinator and researcher roles, to show who could see and change what.
eConsent
Data and exports
Clinical data (codes + labels)CDISC SDTM + Define-XMLData dictionaryAnnotated CRFE2B safetyAudit trail
SUBJECGPERF_CODEECGPERF_LABEL
01-001YYes
01-002NDNot done

See the exports your file needs

Build a study in the free sandbox and generate the blank eCRF PDF and a data export. No credit card.

See what Capture exports

How to use it

Setting up and maintaining the site file

  1. 1

    Agree the structure

    Use the sponsor's file plan if there is one. Otherwise adopt the 13 folders above and record the structure as the first page of the file.

  2. 2

    Open the file before site initiation

    Create the folders and file approvals and agreements as they arrive, so the file is complete before the first participant is screened.

  3. 3

    Keep an index with status

    One line per document: version, date, location, status. Review it at every monitoring visit.

  4. 4

    File safety and correspondence promptly

    Date everything and file within days. Late filing is the most common finding in site audits.

  5. 5

    Track expiries

    Licences, GCP certificates and laboratory accreditations expire. Add review dates to the index.

  6. 6

    Close out and archive

    Reconcile product, notify the committee, and archive for the retention period required by the regulator and sponsor. Record where the file is stored.

Before the first participant

ISF readiness checklist

Approvals in place

Ethics approval and any regulatory authorisation cover the protocol and consent version in use.

Delegation and training complete

Delegation log signed before tasks start, with GCP training and CVs for everyone on it. See the delegation log template.

Consent versions controlled

Only the approved version is available at the site, and superseded versions are retained.

Agreements signed

Clinical trial and financial agreements and insurance statements filed.

Logs started

Screening and enrolment, product accountability and temperature logs ready. See the screening and enrolment log.

Safety reporting path

Know where SAE reports and sponsor notifications are filed, and see the SAE report form.

FAQ

Questions about this template

Something not covered here? Ask us directly.

What is an investigator site file?

The investigator or institution's collection of essential documents for a trial: approvals, protocol, signed consents, staff records, agreements, product accountability, safety reports and correspondence. It shows the trial was conducted according to the protocol and GCP.

What is the difference between the ISF and the TMF?

The ISF is the site's file. The trial master file is the sponsor's file. Each holds its own copy of the essential documents, and some documents appear in both.

Which ICH section lists the essential documents?

Section 8 of ICH E6(R2), organised by when documents are generated: before the clinical phase, during it and after completion. ICH E6(R3) refers to essential records, so confirm which version applies to your study.

Can the ISF be electronic?

Yes, if the system provides access controls, an audit trail and reliable copies, and the sponsor and regulator accept it. Capture is not a document management system and does not hold the ISF.

How long must the file be kept?

For the period set by the applicable regulations and the sponsor, which can be many years after the trial ends. Confirm the retention period with the sponsor and record the archive location.

What can Capture export for the site file?

A blank eCRF PDF, signed consent PDFs with signature data and audit trail, and data exports with a data dictionary and export log. These support folders such as protocol materials, consent and monitoring.

Keep the study data side inspection-ready

Audit trail, signed consent exports and blank eCRF PDFs in one system. Free sandbox.

See what Capture exports