Substances and methods are classified by categories (e.g., steroids, stimulants, gene doping) and the list is updated every year and it is valid for a calendar year. The agreed process for the annual consideration of the List includes three meetings (see timeline below) of WADA's List Expert Group with a draft discussion List being published and circulated for consultation in June, following the second meeting.*
At its third meeting in September, the List Expert Group, following consideration of the submissions received from the consultation process, recommends the new List to the Health, Medical and Research Committee which in turn makes recommendations to WADA's Executive Committee. The Executive Committee finalizes the List at its September meeting.
The use of any prohibited substance by an athlete for medical reasons is still possible by virtue of a Therapeutic Use Exemption (TUE).
Few interesting modifications are:
1) To reflect the growing number of substances developed to stimulate erythropoeisis, hypoxia-inducible factor (HIF)-stabilizers have been added as an example.
2) Intra-muscular use of Platelet-Derived Preparations (PRP) has been removed from the Prohibited List.
3) Desmopressin has been added as an example of masking agent.
4) Methods that consist of sequentially withdrawing, manipulating and reinfusing whole blood into the circulation have been added to this category.
5) Methylhexaneamine has been transferred to the list of specified stimulants (it seems to be a popular choice these days...)
6) At the request of the Union Internationale de Pentathlon Moderne (UIPM) and due to changes introduced in the format of the competition, alcohol is no longer prohibited in Modern Pentathlon for disciplines involving shooting.
7) It is clarified that, in addition to Bobsleigh, beta-blockers are also prohibited in Skeleton, which are both governed by the Fédération Internationale de Bobsleigh et de Tobogganing (FIBT).
8) At the request of the Fédération Internationale de Gymnastique (FIG), gymnastics has been removed from this category.