Hi Asj93, welcome to the group. You may have noticed that I moved your message to this existing discussion about concerns with rising CA 27-29. I did this so can connect with fellow members like @elizm @thessf14 @sandyjr @cindylb @keepmoving2 @keepmoving2 @mom23boys and others. I encourage you to read through the past posts.

To quote an earlier post:
As @cindylb aptly said in an earlier message in this thread "Tumor marker tests are one tool doctors have to monitor but they can have great change and variables." And @mom23boys said "people's numbers bounce around and no two people seem to have the same starting point or "normal"."

Tumor markers are a simple non-invasive test that can give a signal for further investigation – the proverbial canary in the coal mine. Sometimes the fluctuations may indicate a progression of disease and sometimes not.

Have you had a chance to discuss this fluctuation with your oncologist yet?