Although testosterone is available by prescription for some uses, Primobolan has no approved prescription use. Also known as "methenolone" or "metenolone enanthate", it is the same steroid that Barry Bonds is alleged to have tested positive for in 2000 and 2001. A fairly weak steroid on its own, it is generally used in conjunction with other steroids. The drug is generally preferred in injected rather than oral form due to its cost. An official statement by Major League Baseball made shortly after Rodriguez's test results became public expressed "grave concern" without naming Rodriguez, noting that "because the survey testing that took place in 2003 was intended to be non-disciplinary and anonymous, we can not make any comment on the accuracy of this report as it pertains to the player named."