One of the reasons why my oncology group does not use tumor markers is that there has been no evidence to prove that they are 100% reliable for determining the presence or absence of cancer. Apparently, there are several circumstances, such as other health issues or disease, which can contribute to raised tumor marker levels. I realize that isn't a comfort to you… all of us are super sensitive to any news which may suggest a recurrence as we've been through too much not to be anxious… but let your oncologist do his work. It's so nice that it's "someone else's job" to make those determinations! Keep up with your self-care and do not hesitate to let us know how things are going. We're in your corner with this fight.