New Guideline Will Improve Hormone Receptor Testing for Patients with Breast Cancer
College of American Pathologists (CAP)The College of American Pathologists (CAP) and the American Society of Clinical Oncology (ASCO) today issued a joint guideline aimed at improving the accuracy of immunohistochemistry (IHC) testing for the expression status of estrogen (ER) and progesterone receptors (PgR) in breast cancer.