so i had blood tests done at 19 years old. my free test. came back 24 pg/ml. normal range being 52-280 like a stupid teenager i didnt go back and get retested to make sure it wasnt an error in testing. well im getting my blood drawn on friday to check my test. again along with some other things. if i do happen to have low free. testosterone again, what kind of action will the doctor take, if anything?