Understanding Blood Tests
 

I don't understand some of the blood testing for HER2+++ breast cancer. What is CA15-3 test, Her2 serum test and are there other cancer tests I should know about? I'm almost done with my Herceptin treatments (done with chemo and radiation).

Re: Understanding Blood Tests
 

The CA 15-3 test is the one my oncologist is using. It is a cancer antigen serum test. It does not measure the amount of cancer cells in the body. It measures the body's reaction to the presence of these cells. The normal range is 0 - 29.9. My readings have been falling between 16 and 18 and are well within the normal range. I just returned from my first six month check-up and the latest reading was 17.3. The one in Dec. was 16. Even though there was a slight increase, my doctor was not concerned. Other factors such as inflammation in the body can also cause an increase in this test.

As I understand it, the HER2 serum test measures the amount of HER2 cells in circulation in the body. There are members of this board that are having this and I am sure they will help you with more information.

Good luck with you care and with completing your Herceptin. Since I found my lump July 2008, this last exam (including neg CAT scans and other blood work) confirmed for me that I am three years out and NED! I wish that for you!

Sandra

Re: Understanding Blood Tests
 

Here's the link to the information listed on the Homepage:

http://her2support.org/her2-breast-c...nts/serum-her2

Scoll up a little bit on the page and you will find links to information on other tests.

A new research article (abstract) on Her2 serum test was mentioned in this thread:

http://her2support.org/vbulletin/showthread.php?t=50472

Re: Understanding Blood Tests
 

If unsure about blood tests ask you MD. or his/her staff
ask, ask, ask
good luck,
Carol