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Fertility Glossary

High ovarian response

When many follicles develop during stimulation.

IVF & treatment

A high response can give more eggs but raises the risk of ovarian hyperstimulation syndrome. Clinics may change the trigger, freeze all embryos or adjust medication to reduce risk.

Also known as: high responder, hyper-responder

Sources

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.

Related terms

Ovarian hyperstimulation syndrome (OHSS)

Ovarian Hyperstimulation Syndrome.

GnRH agonist trigger

A trigger using a GnRH agonist instead of hCG, often to reduce OHSS risk.

Freeze-all cycle

An IVF cycle in which all suitable embryos are frozen and none transferred fresh.

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