I have to take a drug test tomorrow. I was given a prescription for Histussin HC cough syrup for a cold and am taking it 2 tsp. twice a day. It has hydrocodone in it. Do I tell them and bring in a copy of the prescripton? Will it be all right , since this has been prescribed by my doctor?

Yes, you tell them, and you bring in the prescription. Just to be on the safe side.

A proper drug test, they will ask you to list all of the prescription medication and non prescription that you take.