ABSTRACT
The current rules governing doping in sport have as their core that a doping violation is deemed to occur upon finding in a body fluid a prohibited substance, a metabolite of a prohibited substance, or a compound chemically or pharmacologically related to a prohibited substance. In most cases, urine is the specimen of choice, but recombinant human erythropoietin and related compounds or hormones can be detected in blood (1). To date, hair is not accepted in doping control, although France passed in 2001 a law allowing biologists to use this matrix to document doping (décret n˚ 2001-35 from 11 January 2001).
