Empty follicle syndrome

This uncommon outcome is most often explained by a problem with the trigger injection — timing, technique or absorption — rather than by an inherent absence of eggs. Clinics review trigger administration before the next cycle and may check blood hCG on the day of retrieval.

Also known as: no eggs collected

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.