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Infertility

Our Infertility Support forum is a space to connect with others in the same position, discuss causes, treatment and IVF, and share infertility stories of hope and success.

Has anyone had lower fertilisation rates with ICSI than IVF?

0 replies

HopeWillTriumph · 07/04/2026 16:38

Worse fertilisation with ICSI than IVF

has anyone else experienced this?
we are on our 6th ivf cycle. Usually no problems with fertilisation rate but cycle 5 was a little lower at 38% so we thought let’s try zymot and ICSi to throw everything at it.
very shocked when fertilisation was lower 22% (2 out of 9) despite injecting the best sperm? Has anyone else had this? We are waiting to see if either of the 2 that fertilised make it to day 5 then will discuss with our doctor.
im wondering what could cause this - I’m considering speaking to an embryologist privately to get another opinion as it seems so unusual - but I guess it could be ‘just bad luck’

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