I had a drug test and failed, I'm not sure what it was that made me fail but I'm assuming THC even though I have not smoked for about a month. I was wondering what to expect from the phone call with the MRO? And also I was wondering if it was THC that caused me to fail why would the MRO need to call me? There is no possible way to get out of it so why bother with a phone call? Is it just to get you to admit it so that they can refer you to a federal agency?