Hormones
Oestradiol rises as follicles grow and thickens the endometrium. During IVF, levels are measured alongside scans to judge response and OHSS risk, and in frozen transfer cycles oestrogen is often given as medication to build the lining.
Also known as: estradiol, E2, oestrogen
Related Canada guides
Sources
- Society of Obstetricians and Gynaecologists of Canada (SOGC) patient information
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.