Fertility testing
Saline is passed through the cervix during a transvaginal scan, helping show polyps, fibroids or adhesions.
Also known as: SIS, saline sonogram, sonohysterogram, saline infusion sonography
Related United Kingdom guides
Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.