Denise, there's a test that can be done at the start of Herceptin treatment to establish your baseline levels of Her2, then the test is repeated as treatment progresses to see if the treatment is effective. Here's a link to an earlier post from Tom regarding this test; it's something to consider if you do decide to go forward with Herceptin...Lolly
Bayer HER2 SERUM ELISA
http://www.her2support.org/forums/in...howtopic=21796