A swab for streptococcus will be sent to a microbiology lab. to be cultured for bacteria, it will NOT be examined for cancerous cells.
A smear test will be sent to a cytology screening laboratory, the slide bearing the smear will be stained with special dyes that will enhance the appearance of the cells and make abnormal cells more visible. The slide will then be looked at by a trained microscopist, probably a cytoscreener, and if anything suspicious is seen it will be checked by a consultant.
If you have concerns regarding cervical cancer, you will have a lot of contact with health professionals following the birth of your baby, take the opportunity to ask questions and ask for any help you feel you may need.