What is the Cervical Screening Test? The Cervical Screening Test (CST) aims to prevent cancer of the cervix (also called cervical cancer). Cervical cancer is preventable with regular cervical screening because pre-cancerous changes can be found and easily treated, so cancer does not develop. Most people who do develop cervical cancer have either never had cervical screening or have had screening less often than recommended. Cervical screening saves lives! What is the cervix and where is it? The cervix is the lower part of the uterus (womb) and is located at the top of the vagina. [ID:...