If sufficient numbers of egg follicles have matured after hormonal stimulation, they are retrieved 36 hours after injection of the ovulation-triggering hormone and before ovulation has actually occurred. Your reproductive medicine specialist will access the ovary and carefully remove the eggs using a fine needle. All actions can be observed step-by-step on the ultrasound screen, allowing the treatment to be carried out with the utmost care. The procedure takes less than 20 minutes and is performed under a short general anaesthetic.