How many embryos are considered a good number in a donor egg cycle?
Since most fertility clinics transfer only two embryos or one embryo in an IVF cycle, it is not necessary to have a large number of embryos to achieve a healthy pregnancy. This is particularly true if the egg donor is young (e.g. under 32), rather than if the donor is older (such as with a “known” donor over 35). Nevertheless, when there are many embryos from one egg retrieval, the recipient is more likely to have extra embryos to freeze for future use. Having at least 6-8 fertilized eggs is certainly desirable, and frequently there are more than this.
