2023 edition, incorporating the revisions approved in September and November 2022 and in force from 1 January 2023.
| Approval | 1 November 2022 — Executive Committee of the World Anti-Doping Agency |
| In force from | 1 January 2023 |
| Structure | International Standard for Testing and Investigations, 2023 edition |
| Status | Superseded — replaced by the April 2026 edition |
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.
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.