Hi Chantry! Don't ever feel that you are "barging in"! The CEA is one of 2 tumor tag tests that I was having done every 3 months at my checkups until I had the recurrance. My understanding is that this blood test will show if there is an increase in cancer cell's in the bloodstream. Normal is 3.0. Mine was 12 but that was w/in the normal range. Now that I have been on weekly chemo, my CEA count has been between 2.8 and 3.8, which is good. The other tumor tag test that I now have done every 3 weeks is the CA 27-29. Both of these tests were done when I was first diagnosed as well each visit w/ my oncologist. I hope that there is someone that can explain these tests better than I have but hopefully this will give you some idea.