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ICSI treatment

Intracytoplasmic sperm injection (ICSI) is a common treatment for male fertility problems. It’s a fertilisation method used during IVF, and involves injecting a single healthy sperm directly into an egg. This can help to achieve fertilisation during standard IVF treatment if there is a problem with sperm quality or quantity.

Could ICSI treatment be right for me?

When is ICSI recommended?

What does the ICSI procedure involve?

During ICSI treatment, we inject a single sperm directly into the centre of an egg. After a few days of development and observation in the lab, we place the embryo in the womb exactly the same way as with IVF treatment.

The video shows the process of Intracytoplasmic Sperm Injection (ICSI). The egg is held in place while a single sperm is injected into the cytoplasm of the egg using a fine needle.

What are the success rates with ICSI?

National ICSI success rates range between 50% and 80% of eggs being fertilised. While this doesn’t guarantee conception, it is a slightly higher rate of success compared to IVF because it virtually guarantees that the sperm penetrates the egg. There is no significant difference in pregnancy rates between IVF and ICSI. For more information on ICSI success rates by location, you can see our individual clinic success rates for further information.

How much does ICSI treatment cost?

Prices are indicative only but include monitoring, egg collection, embryo culture and transfer. Prices do not include drugs or other optional costs - costs typically range from £500–£1,000.

Elective freeze of embryos (excluding transfer)
ICSI (in addition to IVF)

Common ICSI FAQs

We understand that you’ll probably have a lot of questions (and there are a lot of acronyms to get your head around!). Here are some of the most common questions we get about ICSI with IVF.

From a patient’s point of view, ICSI is much the same as IVF – it is what happens in the laboratory that differs. With IVF, the eggs are put in a petri dish together with several thousand prepared sperm, then left overnight for fertilisation to hopefully occur. With ICSI, each mature egg is injected directly with a single sperm under a high-powered microscope.

Whether IVF or ICSI is used, eggs are incubated in the laboratory overnight and examined the following day for signs of fertilisation.

ICSI is a delicate and precise technique that requires the use of specialist micromanipulation equipment by highly skilled practitioners. 

ICSI can only be performed on mature eggs. Usually, we expect about 75% of eggs to be mature.

ICSI maximises the chances of fertilisation where there is known to be an issue with sperm quality or quantity. Over 90% of couples having IVF treatment with ICSI will achieve fertilisation of some of their eggs. Fertilisation cannot be absolutely guaranteed because numerous factors affect this, including egg number and quality.

The embryologists choose the sperm that are the most motile (best swimmers) and which look the most normal shape. 

The injection technique may sometimes damage individual eggs. The overall damage rate is low (below 5% of eggs injected) but may be higher for individual patients, depending on egg quality.

ICSI bypasses many of the processes normally associated with fertilisation, which means that a sperm could fertilise an egg that might not otherwise do so. The risk of miscarriage or a birth defect is slightly higher with ICSI than with IVF. It appears to increase in proportion to the severity of male infertility and it is thought this factor contributes most to any increased risk, rather than the actual ICSI technique itself.

Why choose Care?

We have been using ICSI with IVF for 30 years and have helped many patients with this technique, consistently achieving high fertilisation success rates.

Our focus is on individualised treatment and we will only recommend ICSI if we believe it is appropriate for your treatment and will make a difference.

If you have any questions or are ready to book a consultation, you can call our new patient enquiry team on 0800 564 2270.