The basic idea of Athlete Biological Passport (ABP) is to monitor changes in biological indicators over time. This program was first introduced in 2009. The passport included the hematological module only, and was based on a standardized approach to the creation of a specific hematological variables profile to detect the consequences of blood manipulation or the use of drugs that stimulate the production of erythropoietin. In 2014 was added steroid module which tracks changes in the concentration of steroids in the urine over time.
Indicators of the athlete biological passport can be used to make a decision about the fact of anti-doping rules violation ("the use or attempted use of a prohibited substance or method") or as instructions for the athletes’ target testing program.