Does each follicle contain an egg?
No. In fact, sometimes if a womans estradiol is very high it is difficult to see every follicle. This is why more eggs are retrieved than the numbers of follicles seen by ultrasound. Conversely, when the estradiol is very low and only one or two follicles are visible by ultra-sound there may not be an egg in the follicle. This is known as empty follicle syndrome. At Fertimed all clients are scanned prior to egg retrieval.