If your cervical screening test shows cells with moderate or severe changes, you’ll be asked to have a colposcopy. Most colposcopy clinics are in hospital outpatient departments. If the doctor or nurse doing your colposcopy finds an area of your cervix that looks abnormal they will take a biopsy. This is a small sample of the abnormal tissue that is then sent to a laboratory for testing. Depending on the result of your biopsy, you may need to have treatment. The aim of treatment is to remove or destroy your abnormal cells, while causing as little damage as possible to healthy tissue.