Steps in the IVF process

Step four: egg retrieval

Egg retrieval is precisely scheduled to occur a specific number of hours after the hCG injection (typically 34 to 37). Timing is extremely important because the egg retrieval must occur before natural ovulation occurs. During this procedure, you will be given a sedative or anaesthesia.

Typically, the mature eggs are collected using an ultrasound-guided probe and needle. The needle is passed through the back wall of the vagina and into the ovary. The eggs are then drawn up into the needle.

On the day of the retrieval, sperm from either a fresh or frozen sample is used to fertilise the eggs.