What is ICSI?

ICSI is very similar to conventional IVF in that eggs and sperm are collected from each partner. The difference between the two procedures is the method of achieving fertilisation.

In conventional IVF, the eggs and sperm are mixed together in a dish and the sperm fertilises the egg ‘naturally’. However to have a chance that this will occur, large numbers of actively swimming normal sperm are required. For many couples, the number of suitable motile normal sperms available may be very limited or there may be other factors preventing fertilisation, so conventional IVF is not an option. ICSI has provided a hope for these couples.

ICSI refers to the laboratory procedure where a single sperm is picked up with a fine glass needle and is injected directly into each egg (Figure **). This is carried out in the laboratory by experienced embryologists using special equipment. Very few sperms are required and the ability of the sperm to penetrate the egg is no longer important as this has been assisted by the ICSI technique. ICSI does not guarantee that fertilisation will occur as the normal cellular events of fertilisation still need to occur once the sperm has been placed in the egg.

How Successful is ICSI?
Chances of success vary between patients, particularly according to the age of the woman, but on average about 54% of patients will have a baby after one attempt at ICSI. Recent results for IVF/ICSI at our clinic are in Success rates.

Who is ICSI suitable for?

What does ICSI involve?

ICSI Frequently Asked Questions