You said your charges are going to get dropped. Explain a little more about that.

Courts aren't in the habit of requiring people to supply a urine sample. Probation officers are, however, and are responsible for reporting those results back to the court. If you're going to receive some sort of sentence that involves probation and/or drug testing as a condition of that probation, there's where you'd need to be worried about providing a clean urine sample. It's rare that "offenders" go straight from court to the first meeting with a probation officer, but it's not out of the realm of possibility.

That's why I wondered about your statement about the charges being dropped. If that's really the case, you don't have a thing to worry about. But if you're going to receive a probationary sentence in lieu of jail time on a drug offense, then you might indeed need to start making plans for when your probation officer hands you a sample cup.