A newer edition of this regulation is available: 2026

2023 International Standard for Testing and Investigations (ISTI)

2023 edition, incorporating the revisions approved in September and November 2022 and in force from 1 January 2023.

Approval1 November 2022 — Executive Committee of the World Anti-Doping Agency
In force from1 January 2023
StructureInternational Standard for Testing and Investigations, 2023 edition
StatusSuperseded — replaced by the April 2026 edition

What is the International Standard for Testing and Investigations?

The International Standard for Testing and Investigations (ISTI) is one of the mandatory International Standards of the world anti-doping system. The International Standards set out the technical detail for implementing the Code, and compliance with them is mandatory for all Signatories to the Code. This Standard establishes the procedures for test distribution planning, athlete notification, sample collection, sample storage and transport, and for gathering intelligence and conducting investigations.

About the 2023 editionChanges from the 2021 edition

Key changes from the previous edition

  1. 2022 revisionsThis edition incorporates revisions approved by the Executive Committee of the World Anti-Doping Agency in September and November 2022.

Who this document matters to

A procedural challenge to the sample collection process is one of the most common lines of defence in doping cases, and its basis is this text: from how the athlete is notified and chaperoned through to the chain of custody of the sample. The rules on whereabouts information are also set out in detail in this document.

Each case is governed by the version of this Standard that was in force at the time of the relevant event; for that reason, earlier editions are kept available on this page. The official text is published in English and French and, in the event of any conflict, the English text prevails.