I'm currently on my third cycle of test, the first two being 500 mg Test E/week and the current being 500mg Test C/week. As I am halfway through my third cycle I'm considering not coming off of the test for a little while and maintaing the 500 mg/week for an indefinite period of time. I'm aware of the risks with regards to a testosterone deficiency at my age (19) but I've had my test levels checked before my current cycle and they do return to normal after 15 weeks of 500 mg/week. MY QUESTION IS if I stay on it for longer than 15 weeks will the risk of a deficiency be dramatically higher? I've heard of people and know people that stay on it for several years with no worries of their test levels returning to normal. I'm anticipating a lot of criticism with regards to my age but I've had tests done (such as blood work) to ensure that I stay healthy between cycles and I know these cycles are safe and tolerable with my body-->so please don't criticize my age.