Research question Can serial measurements of serum oestradiol, progesterone and β-
human chorionic gonadotrophin (HCG) concentrations, starting from the day of the first …

Research question What factors determine serum progesterone concentrations the day
before cryopreserved embryo transfer in artificially prepared cycles? Design Retrospective …

Objective We aimed to analyze whether elevated progesterone levels on the day before
ovulation affected pregnancy outcomes in natural cycles of frozen thawed embryo transfer …

Objective To examine the predictive value of serum estradiol and progesterone on the day of
human chorionic gonadotropin (hCG) administration and embryo transfer for clinical …

Recent studies suggest that elevated late follicular phase progesterone concentrations after
ovarian stimulation for IVF may result in embryo–endometrial asynchrony, reducing the …

Study question Do serum progesterone or LH levels better predict the optimal timing for
embryo transfer in true natural cycle frozen-thawed embryo transfers (NC-FET)? Summary …

In ovulatory patients, frozen–thawed embryo transfer (FET) is commonly performed during a
natural cycle (NC). The objective was to compare serial monitoring until documentation of …

Objective To assess the association between hCG day progesterone levels and subsequent
frozen-thawed embryo transfer (FET) cycle outcome in infertile women with and without …

Objectives: It has been suggested that the clinical outcomes of frozen-thawed embryo
transfer (ET) are superior to those of fresh embryo transfer. We examined whether a freeze …

Objective The criteria for determining the timing of frozen-thawed embryo transfer (FET) in
natural cycles is conflicting. The objective of this study was to determine which criteria used …