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IVF Lab & Embryology

Inside the IVF Lab: What Happens After Egg Collection?

Much of IVF happens out of sight. The embryology laboratory is where eggs and sperm are assessed, fertilisation is supported and embryo development is observed before transfer planning.

Embryology explained This article is intended to make a common fertility question easier to understand. Individual recommendations require a consultation and review of your own clinical information.

The laboratory receives and identifies the eggs

After egg collection, the embryology team identifies and assesses the collected oocytes and prepares them for the fertilisation method planned by the clinical and laboratory team.

The sperm sample is prepared

The semen sample is processed so the laboratory can work with the sperm population appropriate for the planned procedure. The exact preparation depends on the sample and treatment method.

IVF and ICSI are different laboratory techniques

In conventional IVF, eggs and prepared sperm are placed together under laboratory conditions. In ICSI, an embryologist injects a selected sperm directly into an egg when the clinical plan calls for it.

Fertilisation is checked, but not every egg follows the same path

The laboratory checks for signs of fertilisation at the appropriate time. Some eggs may fertilise normally, some may not, and not every fertilised egg continues to develop into a transferable embryo.

Embryos are observed over time

Developing embryos are monitored according to laboratory protocols. The team records development and communicates information needed for the treatment plan while trying to maintain stable laboratory conditions.

The laboratory is one part of the larger IVF journey

Embryology, egg and sperm factors, the patient’s response to treatment, the uterus and many other biological variables contribute to outcome. No single laboratory observation can guarantee pregnancy or live birth.

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Medical notice: This content is general information and does not replace personal medical advice, diagnosis or treatment. Please consult a qualified clinician for recommendations based on your own history and reports.