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. 
David is the Chief Operating Officer at DECA Dental, and he was the first C-level Executive to join the team. David's main focus has been developing the systems, processes and people to be able to effectively scale the business while still maintaining the reputation Deca was already known for... an excellent guest experience and clinical quality. Within his first year, and with help from a rock star team, he was instrumental in doubling the number of locations and employees. During that time DECA also entered three new markets outside of DFW and was named DFW's 21st fastest growing company by Dallas Business Journal. All of this was accomplished while growing the customer satisfaction rating to over 90%.