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. 
Frozen brain samples were quickly immersed in TRIzol reagent (Invitrogen, Carlsbad, CA, USA) and homogenized at maximum speed (Polytron PT10/35-Brinkmann, Westbury, NY, USA) for 20 seconds. Total RNA, isolated according to the manufacturer’s protocol, was quantified and its purity assessed using a spectrophotometer (NanoDrop ® ND-1000, Thermo Fisher Scientific, Waltham, MA, USA). RNA integrity was verified on 1% agarose gel stained with ethidium bromide. Total RNA samples were treated with DNAse I enzyme (Promega, Madison, WI, USA – 1 U/μg of RNA) for 30 min at 37°C to prevent residual DNA contamination. DNAse-treated total RNA (2 μg) from both experimental groups was simultaneously reverse-transcribed using oligo(dT) primers and SuperScript III reverse transcriptase (Invitrogen, São Paulo, Brazil) in a final volume of 20 μl.
Anabolic steroids differ in their characteristics, which means there are steroids that are only suitable for specific uses. For instance, Trenbolone is not recommended for bulking but it is an outstanding fat burner. This makes it perfect for a lean mass cycle or a cutting cycle. Always take the side effects of a particular compound into consideration whenever you plan a stack. Do not combine anabolic steroids that show similar side effects. For example, never combine Anapolon and Dianabol because they are already quite toxic and if you combine them, the toxicity will increase exponentially and cause serious damage to your body.