3. The man provides a sperm sample
The man provides a sperm sample at about the same time that the woman comes for egg retrieval. The sperm sample is then washed in the laboratory to obtain as many high-quality sperm cells as possible.
4. Fertilisation and cultivation of eggs in the IVF laboratory
Sperm cells are selected in the laboratory and injected into each egg. This is done under the microscope using a glass syringe. When the eggs have been fertilised, they will be placed in an incubator, i.e. an advanced “nesting box”. Even by the next day, we can see how many eggs have been fertilised. We can track the development of the embryos over the following days. The eggs remain in the incubator for a maximum of five days.
5. Transfer of the fertilised eggs
The embryos are transferred to the womb. This transfer only takes a few minutes, and the embryos should attach to the lining of the womb (the endometrium) and develop. Fourteen days later, the woman does a pregnancy test to check whether the ICSI process has been successful.