I took the exam this month but unfortunately i failed. Actually all the examinees that day didnt passed, some of them were nclex passers. There were questions abt normal values, thats the easy part. Some questions were tricky youll find it hard to answer even if you reviewed abt it. So if i were you, better schedule your study time.. I left my job for me to have a lot of time to review, now i know how the test go and its style. My reference is saunders, but i failed. Im just gonna take it again and hopefully will pass..