Also known as: Estrogen Receptors; Progesterone Receptors; ER and PR Status; Hormone Receptor Status
Formal name: Estrogen and Progesterone Receptor Status
At a Glance
Why Get Tested?
The hormone receptor test determines if a breast cancer tumor is positive for estrogen and progesterone receptors, helping to guide treatment and determine
When to Get Tested?
When you have been diagnosed with invasive breast cancer or when your cancer has recurred
A sample of breast cancer tissue obtained during a or a tumor removed surgically during a lumpectomy or mastectomy
Test Preparation Needed?
Your health practitioner may have you discontinue taking hormones for a time period before your sample is collected.