Allow plenty of time before your appointment to check in. You'll need to sign a form stating that the risks and benefits of the test have been explained to you, your questions have been answered, and you agree to the procedure. If you have questions, ask them before you sign the form. Your visit may last several hours.
During the test, you will lie on your stomach or your side on an exam table. You may be given medicine through an IV (intravenous) line to help you relax. The health care provider cleans your lower back and covers the area with sterile drapes. The area is numbed with medicine. The provider places a needle into each disk that is being tested. Then the provider injects a contrast solution into 1 or more of the disks in your spine. A picture of the disk is taken. The provider may test more than 1 of your disks. This is so the results of the 2 tests can be compared and help to find what's causing your pain.
An injection into a disk does cause pain. But keep in mind that this will help your provider diagnose you. They will ask how your pain feels, and if it's like the pain you felt before. The pain may be worse than your normal back pain. Make sure to tell your provider how you feel.
You may be given pain medicine after the discogram. You may also have a CT scan. This imaging test gives more information about the disk. Your provider will tell you when you can get the results of your test.