In March 2005, he fiercely denied using steroids on Capitol Hill, but in August of that year, it was discovered that he had tested positive for stanozolol. According to Boyd, he insisted that his failed test was caused by a "tainted B-12 vitamin vial injected by his wife and provided to him by teammate Miguel Tejada." Palmeiro was suspended for the entire 2005 season by Major League Baseball. When he returned in 2006, he was given a reduced penalty of 50 games, which he served on an installment plan. He finished with 329 hits and 99 RBIs. During his time with the Baltimore Orioles, Rafael Palmeiro used various forms of anabolic steroids to help build muscle and lose weight. The most popular form of steroid used by baseball players at the time was stanozolol, which is a synthetic version of testosterone produced by Sintex in Belgium. It has the same effects as natural testosterone without any of the negative side effects such as increased blood pressure, prostate cancer, or aggression. When Palmeiro first arrived in Baltimore, he came into contact with one of our laboratory's analysts who conducts random drug tests. The analyst reported back to us that Palmeiro had been taking the B-12 supplement vials that were offered to him by his teammate Miguel Tejada. We confirmed this information by conducting our own analysis of Palmeiro's samples from when he played for Baltimore and found evidence of stanozolol usage.