So I took a DOT random and subbed with QF 6.1 on 12/1 at around 9am. I called to verify the batch number and was told "it should be good" but on the website it said expired. I am stressing over it because I'm not sure what happens. Would I have already heard if it was invalid during the test? I'm not concerned about finding thc (since it is QF) but if it's invalid the MRO would call me, correct, and not directly to the employer before trying to contact me? So how much time should pass before I assume I'm good and do not require a retest? It was Alere.