I just passed my exam a couple months ago. I took it just to take it, no pay raises or anything like that... It gives me some type of satisfaction to have extra credentials to show others that I know what I'm talking about. I also used the Core Curriculum and Nephrology Nursing purchased through ANNA. It only took a hour to complete, even though you are allotted 4. I studied for about 4 months prior to taking. I think its more a personal goal than for extra $$... for me, it was worth it. Good luck if you decide to take it