http://www.uci.ch/clean-sport/therapeutic-use-exemptions/
4. Conditions for granting TUE
Article 4.1- UCI Regulations for TUE
A rider may be granted a TUE if (and only if) he/she can show that each of the following conditions is met:
a. The prohibited substance or prohibited method in question is needed to treat an acute or chronic medical condition, such that the Rider would experience a significant impairment to health if the Prohibited Substance or Prohibited Method were to be withheld.
b. The therapeutic use of the prohibited substance or prohibited method is highly unlikely to produce any additional enhancement of performance beyond what might be anticipated by a return to the rider’s normal state of health following the treatment of the acute or chronic medical condition.
c. There is no reasonable therapeutic alternative to the use of the prohibited substance or prohibited method.
d. The necessity for the use of the prohibited substance or prohibited method is not a consequence, wholly or in part, of the prior use (without a TUE) of a substance or method which was prohibited at the time of such use.
[Comment to 4.1: The WADA documents titled “Medical Information to Support the Decisions of TUECs”, posted on WADA’s website, can be used to assist in the application of these criteria in relation to particular medical conditions.]