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 steroid 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. 
Due to the need for a strong PCT and Aromasin carrying extremely strong natural testosterone stimulating properties, this makes it very appealing for this purpose. Due to the slight androgenic nature and moderately decent promotion of IGF-1 this makes it even more appealing. However, we must consider the primary purpose of Aromasin, which is as an anti-estrogen. High levels of estrogen can be problematic, but the hormone is still necessary to our body’s health. It is important in maintaining a proper immune system, as well as in the maintenance of healthy cholesterol levels. Then consider the PCT, which in part is primarily designed to stimulate natural testosterone production, but the overall primary point is to normalize the body. We cannot normalize with low estrogen levels. For a proper PCT that not only stimulates testosterone production but promotes overall normalization, SERM’s should always be your first choice.