Heavy consumption of the essential amino acid lysine (as indicated in the treatment of cold sores) has allegedly shown false positives in some and was cited by American shotputter C. J. Hunter as the reason for his positive test, though in 2004 he admitted to a federal grand jury that he had injected nandrolone.  A possible cause of incorrect urine test results is the presence of metabolites from other AAS, though modern urinalysis can usually determine the exact AAS used by analyzing the ratio of the two remaining nandrolone metabolites. As a result of the numerous overturned verdicts, the testing procedure was reviewed by UK Sport . On October 5, 2007, three-time Olympic gold medalist for track and field Marion Jones admitted to use of the drug, and was sentenced to six months in jail for lying to a federal grand jury in 2000. 
A-Rod, Lance Armstrong, Jose Canseco, Rashard Lewis, Shawne Merriman. The list of superstar athletes accused of -- or admitting to -- taking performance-enhancing drugs is almost as impressive as the number of sports in which they compete. It's not just weightlifting, baseball and cycling. It's football, track and field, swimming, soccer and basketball . And it's not restricted to males -- or to professionals. Just ask former Olympic track star Marion Jones. Or the nine high school athletes in Texas caught using performance-enhancing drugs during the 2011-2012 academic year.