ICSI (Intracytoplasmic Sperm Injection) – injecting a single sperm into each mature egg – is usually recommended if the sperm quality is not good enough to fertilise your eggs using standard IVF (mixing the sperm and eggs in a dish). This may have been identified by semen analysis before you started IVF treatment, but is sometimes discovered on the day of your egg collection. ICSI may also be performed if you have had low or complete failure of fertilisation during a previous treatment.
