I understand that when first entering the program once you go to korea that a drug examination is done to you. I understand also that the exam is hair sampel analysis. What I would Like to know is how far back in the hair sample do they go? US for hair sample goes back by law no more than a month. If they check my hair more then two months back I will deffinatly be deported and arrested? Do you have any clue how far back they go? Thank you Mia