Hypogonadism, Male
"First and foremost you nee to see a specialist.  Note that with the introduction of outside or additional testosterone your natural production can slow, and or shut down.  This is why you need HCG.  HCG keeps your natural testosterone in production even with the introduction of extra testosterone.  Also a good estrogen blocker pill is recommended to keep test from aromatizing into estrogen.  
To sum it up you need all of the following
1. Androgel
2. HCG- keeps natural testosterone producing, 
3. Anastrozole Pills-Stops Testosterone from being converted to Estrogen"