Actually In reading a little about it, it seems to be very likely. With steroids, you’re assuming they’re just pumping these insane amounts like Jose Canseco. But you can do some of these T programs to stop you at a level to get you back to your early 20’s, but not enough to fail a test.
Things like injectable pellets that dissolve over time. Or a carefully administered program thorough a mens clinic. This is achievable for the average Joe, so in knowing a little more about it, I’d imagine it’s widely used in pro sports