I have an aunt who has stage 4 colon cancer and started out w/ 7500 markers? then after the original tumor was removed (metastases in liver and lungs) it was 2500; now after 4 mos of a chemo treatment she has 4500 and has to start a new chemo. What does this all mean? What is a high protein marker count and what is low? And what are they?

Danielle is correct the tumor marker for colon cancer is the CEA and normal is less than 2.5. In the case of your aunt the doctor is using the tumor marker to help him or her determine how well your aunt is responding to treatment. Typically a tumor marker will drop significantly just after the tumor is removed. However you aunts has risen with treatment indicating this treatment is not working well for her and now another will be tried.

Filed under: colon cancer treatment

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