Don't be surprised if the onc balks. It's relatively new and when you look at the various research, not exactly definitive in utility. It seems to be like typical tumor markers, a great indicator for some, less so for others. I think there is someone here on the board who is maintaining on Herceptin.. going back on it when serum her2 rises. I sure wish it was more black and white..but then it couldn't be cancer related
