There's a guy in my gym who's your height and weighs right under 150 lbs, and he's probably around 6% bodyfat, so he looks really skinny. I've seen him bench 275 for reps of 8 or 10, and he does dumbell bench presses with the 110's. I don't know how a human being has that kind of strength at that size, but I would bet that he's probably not suffering from low T.
I can't imagine the strength someone like that would develop if they ever started eating.