Hi! I was wondering if anyone out there knows how far back they test your hair follicles for the IPN evaluation (initial drug testing), if they even do a hair test at all? I'm not sure if they only do a urine screen, but if they happen to test my hair I wanna be prepared. Currently not taking any of my medications, but about 30 days ago or so I did take something for a severe migraine. If the hair test only tests within the past 30 days I should be fine. Please help. (Ps, it was a med that I am prescribed btw). I am in Orlando, FL.