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. 
Overall, the overwhelming data and information shows that a good natural test booster will provide incredibly positive and wonderful benefits without any negative side effects . If you look hard enough, you may find a corner case here or there of something minor or annoying, but we haven’t seen them on any consistent type basis and definitely nothing like some of things you may be hearing with testosterone replacement therapies like AndroGel (which is NOT a Test booster….but rather a outside injection of testosterone).That’s because with natural Test boosters, you’re not injecting your body with outside ’re taking natural supplements that trigger and cause your own body to produce more of it’s own testosterone – naturally!