TUEs are granted for a specific medication with a defined dosage. They are also granted for a specific period of time and do expire. The athlete needs to comply with all the treatment conditions outlined in the TUE Application.
Once a TUE has been granted by an International Federation (IF) or National Anti-Doping Organization (NADO), it will inform WADA, who will then have the opportunity to review this decision. If the decision does not conform to the International Standard for TUEs, WADA may reverse it and deny the TUE. WADA's decision is not retroactive.