IN VITRO TECHNOLOGIES
ICSI in Sofia
ICSI is a fertilization method used in IVF when there is a problem with the sperm. Intracytoplasmic sperm injection (ICSI) involves injecting a single sperm directly into the egg to increase the chances of successful fertilization. If you have already undergone unsuccessful attempts, this is the time to consider a more precise and controlled approach.
When is ICSI treatment used?
This treatment is most commonly used in cases of male factor infertility, poor sperm quality, or previous unsuccessful IVF attempts. The method allows for a more controlled process and better judgment when selecting sperm.
Indications for the procedure
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Low sperm count
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Limited mobility
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Abnormal morphology
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Failed IVF attempts
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Fertility Problem
How does the procedure work?
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Selection and InjectionAfter the eggs are retrieved, the embryologist selects the most suitable sperm. It is injected directly into the egg using a special technique.
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Tracking ProgressFertilization is verified the next day, and the development of the embryos is closely monitored before proceeding with the transfer.
ICSI or standard IVF?
Standard IVF
With this method, the sperm are left to fertilize the egg on their own in a laboratory setting, relying on the natural process.
ICSI Fertilization
With this method, fertilization occurs directly. The embryologist carefully selects a single sperm and manually injects it into the egg.
Precision and Control
ICSI provides greater control over the process and improves the chances of success in difficult cases. Instead of relying on chance, the process becomes precise and targeted.
Frequently Asked Questions
With IVF, fertilization occurs naturally. With ICSI, a single sperm is injected directly into the egg.
In cases of male factor infertility, poor sperm quality, or previous unsuccessful attempts.
The ICSI procedure itself is performed in a laboratory by an embryologist. The patient does not feel the procedure.
Through a consultation and a detailed evaluation of your preliminary medical test results.

Next step
If you're wondering whether ICSI is the right choice for you, you don't have to decide on your own. Schedule a consultation, and we'll provide you with a clear plan tailored to your specific situation.