Comparing urine and blood hormones in natural frozen embryo transfers

This study compares two ways to prepare the ovaries for egg retrieval before IVF: using a progestin hormone or a GnRH antagonist. The goal is to see which method leads to more successful embryo transfers.

This study measures changes in your blood immune markers during frozen embryo transfer when the embryo is chromosomally normal. It may help clinics understand what blood immune patterns relate to successful pregnancy in natural or hormone-prepared cycles.

This trial compares two protocols for preparing the uterus before transferring a frozen embryo. It aims to find which method works better for women with regular cycles and no ovulation issues.

This study looks at how bacteria in the vagina and lining of the uterus change during the “luteal phase” (the time after ovulation and before a pregnancy test) in people using frozen embryo transfers. It may help researchers understand what conditions support embryo implantation and pregnancy in assisted reproduction.

This study looks at “biomarkers” (test signals in your blood or cycle data) to better judge how ready the womb lining is during IVF. It compares two types of IVF hormone setups to see which approach best matches endometrial receptivity and supports successful embryo transfer.

This trial compares a new method to time a frozen embryo transfer (using a test called ERA) with the standard method. The goal is to find the best time to transfer a high-quality embryo in women who have had multiple failed IVF attempts (recurrent implantation failure).