A: What am I supposed to do with this plastic cup? B: That cup is for a urine sample. A: How, exactly, does this work? B: This particular test calls for you to urinate into the cup after you have urinated a little into the toilet. A: When I finish, what should I do then? B: You need to leave the cup in the cubby in the restroom, and the lab tech will get it from the other side. A: What is my doctor testing me for? B: If there are bacteria in your urine, it could mean an infection somewhere. A: Will I know the results right away? B: Your doctor will be contacting you with the results.