A: What is that plastic cup for? B: Your doctor has requested a urine sample. A: Am I supposed to pee into the cup? B: We want what we call a clean sample. Urinate a drop or so into the toilet, and then stop the flow and urinate into the cup. A: Then what do I do with the cup? B: You put the cup in the little cubby in the restroom and close the door to the cubby. A: What is this test for? B: He is looking to see if you have a bladder or urinary tract infection. A: When will I know the results? B: Your doctor will call you in a few days with the results.