UPDATE: In case this happens to anyone else I wanted to provide an update! Today, which is almost a month after taking that drug test, I finally got the call from occupational health telling me the results had been received. However I was then informed that an MRO would be in contact with me later that day to discuss the results. Obviously I freaked out knowing they only contact people to confirm a positive test... Which indeed happened! I tested positive for pseudoephedrine because I take Claritin D for my allergies!!!! The doctor asked me what I might be taking to have gotten a positive result, and I told him. He told me that would contribute to the positive result and that he would notify my employer that I had a negative screening. 10 minutes later I got a call from HR telling me I was finally cleared and asking if I could start tomorrow. What a headache!!! So relieved and excited :)