I'm writing this from my infusion chair so that I can update all y'all in a timely manner. As you know from the last post, my CEA is elevated above the one before it. This last CEA was drawn last Friday, a mere few days since the CyberKnife was completed. The oncologist said that radiation takes a week or so to complete its job and while the tumor cells are dying they are releasing CEA antigen. I looked up half-life of CEA (half-life is the amount of time for half of something to degrade) and it's 5-7 days. So if we let the radiation finish its job and then allow for the 5-7 days to pass, this past CEA was just too soon to be useful. Now, the next CEA will be the one to pay attention to.
I'll keep you updated. :-)
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