IVF/ICSI outcomes between cycles with luteal estradiol (E2) pre-treatment before GnRH antagonist protocol and standard long GnRH agonist protocol: a prospective and randomized study.

Objective: To study if luteal E(2) pre-treatment before GnRH antagonist protocol improves IVF/ICSI outcomes compared with standard long GnRH agonist protocol.

Design: A prospective, randomized and controlled study.

Setting: ART center of a state public hospital

Patient(s): Two hundred twenty infertile women underwent IVF/ICSI treatments.