Re: Test/blood level graph
This is a person-specific thing, depending on SHBG values as individual metabolisation of the drug has a large range in terms of time versus concentration.
Route of administration also matters.
Initial total testosterone value prior to therapy also comes into play - you must climb to a limit in order to converge to one.
You can get an estimate from a site such as roidcalc, where you can put your own half-life and concentration values in.