The dosage of human chorionic gonadotropins influences the relationship between progesterone and cycle outcome during in vitro fertilization-embryo transfer.

Abstract

Increasing the dose of hCG used to stimulate oocyte maturity shifts the previously described relationship between progesterone and IVF-ET-cycle outcome. However, while it remains unclear if progesterone can be used as a predictor of outcome at the higher hCG dose, it appears clear that a relationship exists between minimal progesterone response to hCG and cycle failure.