test levels usually return to normal after about a month-6 weeks, but its the other levels that fuck you. my boy got into deep shit with his doctor 2 months after he finished a blast, but his free test and some other hormone was really high. honestly, after a little time of being on PCT its probably best to tell your doctor what you do.
after my friend got into shit with this HRT doctor, he told him what he does, and the doctor advised him to always stay on his regular TRT prescribed to him throughout his blast.
by the way, how old are you and how much test are you prescribed weekly? and what level does taht dose put you at?