Glujovsky D, Dominguez M, Fiszbajn G, Papier S, Lavolpe M and Sueldo C. 2011. Journal of Assisted Reproduction and Genetics by American Society for Reproductive Medicine.

To evaluate which is the minimum number of oocytes to be allocated to each recipient in a shared egg donor program, we analyzed 953 recipients that received at least 4 metaphase II (MII) oocytes. We divided the recipients according to the number of MII oocytes actually received and no statistically significant differences were found among the analyzed strata in clinical pregnancy rate.

However, the rate of top quality transferred embryos, and the embryo freezing rate were significantly higher among those recipients that received 7 or more mature eggs.