When you inject a Test ester of any kind it will slowly be broken down by the body's esterase enzyme like this (TestE)------> (Test) + (E)

Each ester has a different rate at which this happens at.

So for Test E this rate gives us a half life of 6-7days, this means that if you inject 500mg it will take a week for 250mg of pure Test to be gradually realeased (and then excreted) into the bloodstream.


Since you take the same amount of drug each week blood levels will slowly rise as you are injecting faster then you are excreting.

Once blood levels are high enough the body will experience an increased rate of protein synthesis and all the other effects.