I had discogram done before my surgery to find where to remove bad disc. They tested L3 L4 and L5. On pain it was not that bad.(done april 2010) Had epidural injection done on back no sedation that hurt much worse then discogram. Had epidural injection on back with sedation much better. It depends what meds they give you. During discogram they gave me twilight meds, still awake but relaxed feeling good.

Hope this helps