Administration of a gonadotropin-releasing hormone antagonist during the 3 days before the initiation of the in vitro fertilization/intracytoplasmic sperm injection treatment cycle: impact on ovarian stimulation. A pilot study

Among women under 36 years old, early follicular phase GnRH antagonist pretreatment in a fixed GnRH antagonist protocol results in a trend toward a higher number of retrieved oocytes but does not yield significantly higher pregnancy rates.