Conventional ICSI

Your semen report came back with numbers you did not expect. Or your last IVF cycle ended with eggs collected, yet few or none fertilised. In both cases, the sperm could not reach or enter the egg on its own, and that is exactly where conventional ICSI (intracytoplasmic sperm injection) steps in.

There is plan conventional ICSI treatment around your reports, your history and your next cycle. On this page, you will see who needs it, how the ICSI procedure works step by step, how long it takes, what shapes success and cost, and how it differs from standard IVF. Sometimes a cycle doesn't need millions of sperm. It needs just one, placed with care.

How Conventional ICSI Works

In natural conception, many sperm travel to the egg, but only one breaks through its outer layers. For some couples, that journey is too hard. Conventional ICSI removes this barrier by placing one healthy sperm inside one mature egg, so ICSI fertilisation no longer depends on how well sperm can swim or enter.

Is every egg suitable for injection? No. Only mature eggs can be injected, as immature eggs are not ready for fertilisation. So fewer eggs may be injected than collected.

Why ICSI Is Used During IVF

ICSI is used during IVF when leaving sperm to fertilise the egg is unlikely to work. This ICSI IVF treatment, often called IVF with ICSI, keeps the cycle the same. Egg retrieval, embryo growth and transfer happen as usual. Only the fertilisation step changes. In conventional ICSI, the embryologist handles that step. For the wider picture, see our ICSI treatment page. Next, let us look at who benefits most from this conventional ICSI fertilisation technique.

Who Needs Conventional ICSI Treatment

Not every couple needs ICSI for male infertility, but for many it offers a real chance at pregnancy. Doctors usually advise ICSI treatment for male infertility when male factor infertility, such as a low sperm count or poor sperm movement, makes it hard for sperm to reach or enter the egg on their own.

Is ICSI needed if only a few sperm are found on testing? In many cases, yes. Even when a semen test finds just a handful of live sperm, the embryologist can still use them for injection, so a very low result does not have to end your hopes.

ICSI treatment with retrieved sperm is also common after TESA or PESA, and it can be done with sperm saved earlier through sperm freezing.

Can ICSI Help With Low Sperm Count or Poor Motility?

Yes, in many cases. When the numbers are only slightly low, IUI or standard IVF may still work well. But when only a few million moving sperm remain after washing, or motility is very poor, fertilisation in the dish becomes unlikely. This is where ICSI treatment for low sperm count and poor sperm motility helps most, and why conventional ICSI for male infertility is often the better choice.

Is ICSI Recommended After Failed Fertilisation?

Yes, in most cases. Sometimes eggs are collected, yet few or none fertilise because sperm cannot enter them. Although this result is painful, it gives your doctor a clear answer, and ICSI usually becomes the next step after fertilisation failure. Before planning it, a few simple tests help us decide.

What Tests Are Needed Before Conventional ICSI Treatment?

A few simple tests before ICSI treatment help us understand what each partner needs. Do both partners need tests before ICSI? Yes. Sperm results show whether ICSI is needed, while the female partner's results shape how we plan the cycle.

1. Semen analysis: Your semen analysis results show sperm count and sperm motility, measured against WHO reference values.
2. Egg reserve tests: An antral follicle scan and an AMH blood test can tell you how many eggs you can get. This helps us plan the right stimulation for you.
3. Hormone tests: These check hormones that control how eggs grow and how sperm are made so that we can treat any problems first.
4. Infection screening: Both parents must be checked for diseases like HIV and hepatitis before they can start IVF.

Which Semen Analysis Results Point Towards ICSI?

ICSI is usually advised when results fall well below WHO reference values. As a guide, WHO lists 16 million sperm per millilitre as the lower limit for sperm count and 30% for forward-moving sperm. Results close to these limits may still suit IUI or standard IVF. But when the count drops far lower, or very few sperm move forward, conventional ICSI gives fertilisation a much better chance.

What Are the Steps of the Conventional ICSI Procedure?

The ICSI procedure, also called the intracytoplasmic sperm injection procedure, follows a normal IVF cycle with one careful change at fertilisation. Here is the ICSI procedure step by step.

Is the ICSI procedure painful for the woman? Not usually. Egg retrieval is done under sedation, so you rest through it. Mild cramping afterwards often settles within a day or two, and the ICSI step itself happens in the lab. After fertilisation, we closely monitor your embryos and plan the transfer for the healthiest one.

Which Sperm Is Chosen for ICSI?

Before choosing one, the embryologist examines each sperm closely. Normal sperm morphology, which means that the head and tail are well formed, and steady forward movement are the two most important things.

This careful selection ensures each mature egg gets the healthiest sperm possible, even if it's only a small amount.

How Is Sperm Injected Into the Egg During ICSI?

Conventional ICSI uses standard microinjection with a very fine glass needle. First, the embryologist removes the outer cells around each egg to confirm it is mature. A holding pipette then holds the egg steady.

The embryologist slows the chosen sperm, draws it into the needle, and places it inside the egg. This oocyte injection takes only minutes. After the sperm injection, the eggs rest overnight before staff check for fertilisation. Next comes the treatment timeline.

Duration of Conventional ICSI Treatment: How long does ICSI treatment take?

For most couples, one fresh conventional ICSI cycle takes about four to six weeks, from the first stimulation injection to the pregnancy test.

• Ovarian stimulation (10 to 12 days): You take daily injections, with regular scans to track how your eggs are growing.
• Egg retrieval and ICSI (1 day): Eggs are collected about 36 hours after the trigger shot, and ICSI is done the same day. Embryo growth (3 to 5 days): Your embryos grow in the lab while the embryologist checks their progress.
• Fresh transfer: The best embryo is transferred straight away, often as a day-5 [blastocyst transfer].
• Frozen transfer (a later month): Embryos are stored and transferred once your uterine lining is ready. This adds a few weeks but gives your body time to rest.
• Pregnancy test (about 2 weeks later): A blood test after transfer confirms whether the cycle has worked.

Now that you know how long each stage takes, it helps to see how conventional ICSI differs from standard IVF, and why that difference matters for your treatment plan.

Is ICSI Better Than Conventional IVF?

Not always, because it depends on the sperm. The main difference between conventional IVF and ICSI is how the sperm meets the egg. In standard IVF, many sperm are placed around each egg, and one must enter on its own. With ICSI, the embryologist places a single sperm inside the egg.

So when you compare ICSI vs conventional IVF, conventional insemination vs ICSI or conventional fertilisation vs ICSI, the real question is whether sperm can do that work alone.

Both methods use the same IVF cycle, so choosing conventional IVF or ICSI does not change your stimulation, retrieval or transfer. Can conventional IVF and ICSI be used in the same cycle? Yes. In a split approach, some eggs are fertilised with standard IVF and the rest with ICSI. It helps when results are borderline.

Does Piezo ICSI Work Better Than Conventional ICSI?

Not for everyone. Piezo ICSI uses tiny vibrations, instead of a direct push, to open the egg's membrane. This may put less stress on fragile eggs. For most patients, conventional ICSI remains the standard method used in IVF laboratories. Next, let us look at what shapes the cost of treatment.

Conventional ICSI Success Rate: What Affects Your Chances?

ICSI numbers can feel confusing because two different rates are often quoted. The fertilisation rate shows how many injected eggs fertilise, usually around 70 to 80 per cent. The pregnancy rate shows how many cycles lead to pregnancy, and it depends mostly on age. 

So when you see an ICSI treatment success rate, check which one it describes.

Does ICSI guarantee pregnancy? Sadly, no treatment can. ICSI helps sperm enter the egg, but it cannot make every embryo healthy. It gives you a fair, real chance.

So, what factors affect ICSI success? Beyond age, the main ones are:

• Egg quality: Mature, healthy eggs form stronger embryos.
• Sperm DNA quality: High DNA damage can lower embryo quality.
• Embryo quality: Embryos that reach the blastocyst stage implant more easily.
• Uterine health: A healthy lining helps the embryo settle.

Are There Any Risks With ICSI Treatment?

The good news is that the risks are small, and your doctor explains each one first. A few eggs may be damaged during injection. If male infertility has a genetic cause, it can pass to a son, so genetic counselling may be advised. ICSI also shares the usual IVF risks, such as ovarian hyperstimulation or multiple pregnancy.

Why Choose Conventional ICSI

Choosing ICSI fertility treatment is a big step, and you should not face it alone. The clinic will stay with you from your first report to your final result. Who plans the ICSI part of an IVF cycle? Your fertility specialist decides on ICSI, and the embryologist performs it. We keep both working from one plan, built around you.

Whether this is your first ICSI infertility treatment or a second attempt, we keep every step clear. Sometimes, one healthy sperm and the right support can be enough.