Releases
WADA launches stakeholder consultation process for one Technical Document and one Technical Letter

The World Anti-Doping Agency (WADA) invites stakeholders to participate in a consultation process to revise the following Technical Document (TD) and Technical Letter (TL):
TD2025DBS - Dried Blood Spots (DBS) for Doping Control - Requirements and Procedures for Analytical Testing and Sample Storage
This TD has been revised to improve the formatting, structure, and clarity of the document, and also to make substantive changes to the following Article sections:
- Article 2: Acceptance of DBS Samples for Analysis;
- Article 4: Selection and Validation of Analytical Testing Procedures with the addition of a Minimum Harmonized Menu with MRPL (reported in Annex A); and
- Article 6: Minimum period of storage of DBS Samples.
TL26 Clomifene - Instructions on the Analysis and Reporting of Clomifene Findings in Urine Samples
This new TL defines a new Minimum Reporting Level and analysis requirements for clomifene. This substance, which is prohibited at all times and is classified under class S4.1 Anti-estrogenic Substances of the Prohibited List, may be present in athletes' urine as a result of the consumption of poultry-derived products (i.e., chicken eggs and meat) contaminated with residues of clomifene.
Stakeholders are invited to review and provide comments by 21 February 2025 using WADA’s online consultation platform, WADAConnect.
For more information related to the use of WADAConnect, please refer to the simple user guide.
About WADA’s Technical Letters and Documents
Under the International Standard for Laboratories, WADA’s TLs and TDs provide direction to WADA-accredited laboratories, WADA-approved laboratories for the Athlete Biological Passport, and other stakeholders. TLs are concerned with issues of analysis, interpretation, and reporting of results for specific Prohibited Substance(s) and/or Prohibited Method(s) or with the application of specific Laboratory procedures, whereas TDs are concerned with technical and procedural issues.
As part of WADA’s mandate to enhance anti-doping activities under the World Anti-Doping Code, TLs and TDs are occasionally revised to reflect scientific and technological advances in the performance of anti-doping tests and the reporting of test results. They are revised and refined in consultation with WADA stakeholders.
For any questions related to the above, we invite you to contact WADA’s Science Department at science@wada-ama.org.
We thank you in advance for your feedback.