Quote Originally Posted by Late_Starter View Post
Even in the first week before Test has built up? I took a full 12.5 tab on the first day..
Test begins to be metabolized immediately after injection.

Just because you don't see body composition changes during the first week exogenous test is still in your system.

Also, it takes about a week for aromasin to reach peak plasma concentration.

This is why it would be in your best interest to begin taking your AI on day one and continue taking it until starting PCT.