An endometrial biopsy is a way for your woman Nurse Practitioner in Youngstown, Ohio to take a small sample of the lining of the uterus (endometrium ). The sample is looked at under a microscope for abnormal cells. An endometrial biopsy helps your woman Nurse Practitioner find any problems in the endometrium. It also lets your female OBGYN check to see if your body's hormone levels that affect the endometrium are in balance. Your woman Nurse Practitioner may use a soft, straw-like device (pipelle) to suction a small sample of lining from the uterus. This method is fast and is not very painful. A biopsy is done to find the cause of abnormal, heavy or prolonged uterine bleeding. It is often done to find the cause of uterine bleeding in women who have gone through menopause to see whether the lining of the uterus (endometrium) is going through the normal menstrual cycle changes.