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. 
Pharmacom Labs PHARMA Nan D300 is presented in a 10ml vial and reportedly contains 300 milligrams of nandrolone decanoate per milliliter according to the label and packaging. Samples of this product were purchased from a European-based authorized reseller and internet source between the dates of April 10, 2015 and May 10, 2015. The samples were forwarded and received by the analytical laboratory Simec AG for HPLC-UV testing on May 19, 2015. The quantitative dosage testing report was completed on June 2, 2015. The “quality code” listed on the product was “zpgtek35de”. The quality code was successfully used to authenticate/verify the product on /code.