What are the success rates of ICSI compared to IVF?
ICSI and conventional IVF have similar success rates for many patients in the UK. Using ICSI does not automatically improve outcomes when there is no identified sperm issue. Success depends on individual factors such as age, egg quality and sperm health.
ICSI is usually recommended when fertilisation may be more difficult, rather than as a way to increase success rates for everyone. At Bourn Hall, our approach is guided by clinical need, choosing the least invasive option appropriate for each patient.
| IVF | ICSI | |
| Overall success rates | Similar for many patients | Similar for many patients |
| When it’s usually recommended | When fertilisation is expected to occur naturally | When fertilisation may be more difficult |
| Impact on success rates | Effective in specific cases | Does not automatically increase success |
| Role of sperm health | Relies on sperm being able to fertilise the egg | Helps overcome certain sperm-related issues |
| How decisions are made | Based on individual circumstances | Based on individual circumstances |