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. 
Nandrolone Decanoate is available without prior prescription from UK Express Pharmacy. Esterified steroids are proposed to prolong the window of therapeutical effect following administration, allowable for a lower periodic injection docket compared to injections of free (unesterified) steroid.
Nandrolone decanoate offers a keen top in nandrolone release 24-48 hours accompanying deep intramuscular injection, which constantly goes down to near baseline points about 2 weeks later. The average depot-release half-life of nandrolone decanoate is eight days.