Her-2/neu
Also known as: HER-2/neu; c-erbB-2; HER2
Formal name: Human epidermal growth factor receptor
Related tests: Hormone Receptor Status; Tumor markers
At a Glance
Why Get Tested?
To determine whether a breast cancer tumor is positive for Her-2/neu, which helps to guide treatment and determine prognosis
When to Get Tested?
When you have been diagnosed with invasive breast cancer and your doctor wants to determine whether the Her-2/neu gene is being over-expressed in the tumor
Sample Required?
A sample of breast cancer tissue obtained during a biopsy or a tumor removed surgically during a lumpectomy or mastectomy; sometimes a blood sample drawn from a vein in your arm
Test Preparation Needed?
None
