What exactly is “true trt” these days
Many are using 300 mg and up and consider that to be trt 
my own definition of true TRT is whatever individual dosage which doesn't suppress one's own endocrine axis
this dosage is different from person to person
by definition, Test Replacement should do just that, replacing the individual's own T production to where it should be.
physiological ranges for normal sedentary adults can be looked up online and vary slightly
This is the physical part.
Now comes the well-being part: for adults who wish to increase their appetite, libido, energy levels and enhance recuperation from activities, a broader TRT approach can be used, one that surpasses physiologic range and prevents the majority of side effects linked to supraphysiologic dosages.
For a young adult it is perfectly possible to get maximal range physiologic T levels without having to add TRT, provided they take good care of themselves in every way possible.

What I think is, you gotta be efficient in what you do.