Um....This is actually the only valid use of test. It's used for test replacement therapy...Not for atheletes seeking accelerated muscle growth. Enanthate or cypionate are given indoses of 100-250mg once every two weeks. Sustanon(which is not used in the US) is injected once a month of rtheraputic purposes. Prop would be a pain in the ass...in more than one way...so long esters are prefered.