The correct procedure for collecting a urine specimen from an indwelling catheter is to: remove urine from the drainage tube with a sterile needle and syringe and place urine from the syringe into the specimen container. disconnect the drainage tube from the collecting bag and allow urine to flow from the tubing into the specimen container. disconnect the drainage tube from the indwelling catheter and allow urine to flow from the tubing into the specimen container. open the spigot on the collecting bag and allow urine to empty into the specimen container.