Testosterone caproate (TCa), also known as testosterone hexanoate, is an androgen and anabolic steroid and a testosterone ester that is no longer marketed.It was formerly available as a component of Omnadren 250, along with testosterone isocaproate, testosterone phenylpropionate, and testosterone propionate, but this formulation has since been discontinued. Testosterone caproate is an analytical reference standard categorized as an anabolic androgenic …