7 day half life
Week one 300mg
Week two 150mg
Week three 75mg
Week four 37.5 mg
Just so you know, once the exogenous testosterone in your system is LOWER than your typically natural Test, you LH and FSH will start to tick up.
None of this is exact, dependant on the person.
Its s bit more complicated than that.
Your doc may Test LH/FSH.
If your goal is to hide the fact that your taking AAS, you may want to wait even longer... a couple months.
Because they will know when LH/FSH come in at 0.1 and your Test comes in at 250.
Honestly... best bet is to wait an extended period and get your REAL levels tested, not your post cycle bottomed out levels eith flatlined HPTA.
Food for thought l