I"M 34, and think I Might have low T.

I also have sleep apnea so could be that.

Anybody know how much to have a T test done is ? Also does it have to be a blood test? they sell them on ebay so.
I am thinking about taking a mild dose just to build up some muscle on my workouts.
Can I do mild does and just stay cut but not super obvious i'm on them?

thanks mike

ps- I watched bigger faster stronger and I think them saying they are super dangerous is stretching it on the media. They seem great overall.