agnostics ▁in ▁Las ▁Veg as , ▁Nev ada . ▁The ▁list ▁of ▁the ▁ 1 0 4 ▁positive - testing ▁players ▁was ▁released ▁to ▁the ▁Major ▁League ▁Baseball ▁Play ers ▁Association ▁( ML B PA ) ▁in ▁ 2 0 0 4 . ▁The ▁players ' ▁union ▁later ▁said ▁that ▁the ▁ 1 0 4 ▁positive ▁samples ▁were ▁in ▁the ▁process ▁of ▁being ▁destroyed ▁when ▁they ▁were ▁sub po ena ed ▁by ▁federal ▁authorities ▁in ▁November ▁ 2 0 0 3 , ▁making ▁continued ▁destruction ▁" im pro per ." ▁ ▁Although ▁test oster one ▁is ▁available ▁by ▁pres cription ▁for ▁some ▁uses , ▁Prim ob olan ▁has ▁no ▁approved ▁pres cription ▁use . ▁ ▁Also ▁known ▁as ▁m eth en ol one ▁or ▁met en ol one ▁en anth ate , ▁it ▁is ▁the ▁same ▁ster oid ▁that ▁Barry ▁B onds ▁is ▁alleg ed ▁to ▁have ▁tested ▁positive ▁for ▁in ▁ 2 0 0 0 ▁and ▁ 2 0 0 1 . ▁ ▁A ▁fairly ▁weak ▁ster oid ▁on ▁its ▁own , ▁it ▁is ▁generally ▁used ▁in ▁conj unction ▁with ▁other ▁ster oid s . ▁ ▁The ▁drug ▁is ▁generally ▁preferred ▁in ▁inject ed ▁rather ▁than ▁or al ▁form ▁due ▁to ▁its ▁cost . ▁ ▁An ▁official ▁statement ▁by ▁Major ▁League ▁Baseball ▁made ▁shortly ▁after ▁Rod rig uez ' s ▁test ▁results ▁became ▁public ▁expressed ▁" gra ve ▁concern " ▁without ▁naming ▁Rod rig uez , ▁not ing ▁that ▁" because ▁the ▁survey ▁testing ▁that ▁took ▁place ▁in ▁ 2 0 0