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Reconciling investigational product label versions in Türkiye

Connect approved label text, packaged stock, study changes and site dispensing instructions without compromising trial blinding.

Cover image for: Reconciling investigational product label versions in Türkiye
Photo: National Institute of Allergy and Infectious Diseases (NIAID), NIH · License: Public domain · Cropped and resized.
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A label change can affect stock already at depots and sites. Türkiye trial teams need to know which units carry which version before new instructions are released to pharmacy staff.

Identify the exact label change

Review the current TİTCK application requirements and the product-specific documentation to determine the applicable change process. Do not treat a new label artwork as authorization to relabel existing stock. Manufacturing, regulatory and site responsibilities must be identified for the actual operation being proposed.

Create a stock-to-version register

We recommend a stock-to-version register connecting label text version, language, kit identifiers, batch, location and expiry information. Keep treatment-identifying content restricted to authorized unblinded roles. Where a change affects use instructions, assess the protocol, pharmacy manual and training implications alongside the physical packaging.

Check controlled implementation

  • Compare approved text with final artwork and explain every material difference.
  • Reconcile affected depot and site units before release of the new instruction.
  • Confirm authorized relabeling or replacement arrangements and the required evidence.
  • Check dispensing guidance, accountability and treatment-blinding controls after implementation.

Preserve blinding and history

Do not overwrite historical label versions in the filing system. Retain the decision, artwork and evidence showing which stock was affected. If a site receives an unexpected version, segregate it from routine dispensing while the responsible quality and regulatory functions reconcile its status.

Frequently asked questions

Can a site print a replacement label from an email?
Only within an appropriately authorized and controlled process; an email attachment alone is insufficient.
Must blinded staff see the full stock register?
Provide the information needed for their role while protecting treatment allocation.

Sources

  1. TİTCK — Clinical research application guidance and module notes
  2. TİTCK — Good Clinical Practice guidance