Why get tested?
To determine whether a breast cancer tumour is positive for oestrogen and/or progesterone receptors, which helps to guide treatment and determine prognosis

When to get tested?
If you have been diagnosed with breast cancer and your doctor wants to determine whether the tumour's growth is influenced by the hormones oestrogen and/or progesterone

Sample required?
A sample of breast cancer tissue obtained during a biopsy or a tumour removed surgically during a lumpectomy or mastectomy