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Fertility Glossary

Baseline scan

An ultrasound at the start of a cycle before medication begins or changes.

IVF & treatment

The baseline scan, usually transvaginal, checks the ovaries and lining are ready — for example that there are no cysts and the lining is thin after a period. It may also include an antral follicle count.

Also known as: day 2 scan, base scan

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.

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