Some are saying a Testosterone to Epitestosterone Ratio = 1 to 1 is Normal and that a Testosterone to Epitestosterone Ratio = 4 to 1 is allowed by the UCI. This source has it different: http://www.fpnotebook.com/URO39.htm

Normal: Epitestosterone to Testosterone Ratio = 2-3 to 1

Abnormal: Epitestosterone to Testosterone Ratio = 6-9 to 1

Conditions with abnormal ratio
1. Growth Hormone abuse by athletes
2. Anabolic Steroid use by athletes