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Preparing biological sample transfers from a Türkiye trial site

Reconcile consent, sample identity, destination, permissions and shipment evidence before transferring biological materials.

Cover image for: Preparing biological sample transfers from a Türkiye trial site
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A courier booking does not establish that a biological sample may be transferred or used. Türkiye study teams need a documented path from the participant's permission to the receiving laboratory's permitted activity.

Define material, purpose and destination

Use current TİTCK resources and the applicable local requirements for the material and transfer. Research samples, diagnostic specimens and human tissue activities can have different rules. Avoid treating a study approval as blanket permission for every international destination, future analysis or onward transfer.

Create a sample transfer matrix

We recommend a matrix linking sample type, coded identifier, collection purpose, consent scope, destination laboratory and required permissions. Include storage period and any planned secondary analysis. Have unresolved classification or export questions reviewed by the responsible regulatory and institutional functions before samples leave the site's control.

Check before dispatch

  • Match planned analyses and storage to the consent information and approved protocol.
  • Verify the receiving laboratory, transfer agreement and applicable material-specific permissions.
  • Check coded labels, manifest, temperature conditions and authorized courier instructions.
  • Record dispatch, receipt condition, discrepancies and the owner of remaining samples.

Reconcile receipt and future use

Reconcile the laboratory receipt against the manifest and preserve shipment evidence. A change of laboratory or analysis purpose should trigger reassessment before onward transfer. Track withdrawal requests through the agreed process and distinguish destruction, exhausted samples and retained analytical records.

Frequently asked questions

Does study consent permit unlimited future use?
No. Assess the actual information, permission and applicable requirements for the proposed use.
Is the same check needed for a domestic transfer?
The details may differ, but purpose, identity, custody and permitted use still require control.

Sources

  1. TİTCK — Ethics committee application guidance
  2. TİTCK — Good Clinical Practice guidance