The doctor I used before did not discuss tumor markers. He always said it was not reliable. The new doctor I have does watch tumor markers. I don't really know how that works. Can you well informed ladies help me out? He told me my markers were elevated and gave the number 150 but I have no idea what the means. He explained that numbers are for individual use (can't compare to others) but rather a marker for how I am doing. How do you understand it?