I've had 9-10 drinks every night this past weekend (Fri-Sun) last drink at 8pm. I didn't know about the EtG testing before. I found out that I have to come in for random drug urine analysis Wed at 6pm. Can they randomly give me EtG test withour telling me? I should be alcohol free for 70 hours at that point. What are my chances of failing? Should I worry about it?