Why get tested? To determine whether a breast cancertumor is positive for Her-2/neu, which helps to guide treatment and determine prognosis
When to get tested? If you have been diagnosed with invasive breast cancer and your doctor wants to determine whether the Her-2/neugene is being over-expressed in the tumor
Sample required? A sample of breast cancer tissue obtained during a biopsy; sometimes a blood sample, drawn from a vein in your arm, is also required
This article was last reviewed on April 3, 2006.
This page was last modified on April 8, 2009.
The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.
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