Posted by Christine P. on April 13, 2016, 4:26 pm, in reply to "her 2 testing"
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I was tested with one test and got a positive result. Switched oncologists and she did another test that came back negative. The third test came back negative. I went through chemo. After my mastectomy the tissue was tested and came back positive. I was advised to go back and get treated with the HER2+ drugs (Perjeta and herceptin). I was told that 5 percent of BC patients have mixed / ambiguous results.