A Patient Is Scheduled for a Myelogram Prior to Having

A patient is scheduled for a myelogram prior to having spinal fusion surgery.What should the nurse instruct the patient to do prior to this test?

A) Shower with antiseptic soap
B) Take nothing by mouth for four hours before the test
C) Take an over-the-counter analgesic before arriving for the test
D) Restrict the intake of caffeine products for 24 hours before the test