wounded

was hurt about 8 years ago and since then workmans comp has made my life a living hell. i've had three surgeries on my head and one on my neck where they fused my c-4 c-5 and since this accident i've suffered from chronic headaches 24/7 and chronic pain thru my whole upper neck and shoulder areas. i guess what i'm getting at is that i live in arizona and they just passed the marijuana law and that really makes my day except that comp will test me for drugs and if thc shows up they drop me ????? they will prescribe me 150 percocets a month plus sevella for chronic pain and topical patches for muscle spasms but one drop of thc and i'm screwed....:( just doesn't seem fair but thats what happens here and i guess my question would be --- will comp be able to prescribe medical marijuana or will i still be screw at ua time ????