Tour de France 2012: Frank Schleck asks for 'B' sample to be analysed after withdrawing due to failed dope test The WADA accredited laboratory in Châtenay-Malabry detected the presence of the diuretic Xipamide in Schleck's urine. RadioShack-Nissan have withdrawn Schleck from the race but will continue on the Tour as they currently lead the Teams' classification. Luxembourg media network RTL have published a link to a brief statement by Schleck in which he denies having knowingly used the substance. After being informed of the positive test yesterday afternoon, he voluntarily travelled to Pau police station to make a statement to officers from OCLAESP (central office for the fight against environmental damage and for public health). "A doctor from the UCI has tonight informed me that a prohibited substance has been detected in my urine during a routine doping control performed on July 14, 2012, " said Schleck in his statement. I categorically deny taking any banned substance. I have no explanation for the test result and therefore insist that the B sample be tested which is my right. If this analysis confirms the initial result, I will argue that I have been the victim of poisoning. The Tour continues today, without Schleck, with a massive mountain stage from Pau to Bagneres de Luchon.