Objective To investigate the association between luteal serum progesterone levels and
frozen embryo transfer (FET) outcomes. Design Systematic review and meta-analysis …

STUDY QUESTION What is the association between serum progesterone levels on the day
of frozen embryo transfer (FET) and the probability of live birth in women undergoing …

A retrospective cohort study was performed to examine whether, in artificial endometrial
preparation for frozen embryo transfer (FET) cycles, progesterone (P) levels the day prior to …

Objective To summarize efficacy and safety data on a new progesterone compound which is
available for subcutaneous administration as compared to vaginally administered …

STUDY QUESTION Does supplementation with vaginal tablets of progesterone after frozen-
thawed embryo transfer in natural cycles improve the live birth rate? SUMMARY ANSWER …

Background There is a lack of consensus on the optimal dose and form of progesterone
supplementation during frozen‐thawed embryo transfer with hormone replacement therapy …

Abstract STUDY QUESTION Are progesterone (P) levels on the day before natural cycle
frozen embryo transfer (NC-FET) associated with live birth rate (LBR)? SUMMARY ANSWER …

Objective To investigate the efficacy of oral dydrogesterone for luteal phase support (LPS) in
modified natural cycle frozen-thawed embryo transfers (mNC-FET) compared to micronized …

Background Previous observational studies have highlighted the negative effects of serum
hormone levels at the minimum threshold during frozen embryo transfer (FET) cycles …

STUDY QUESTION Does an individualised luteal phase support (iLPS), according to serum
progesterone (P4) level the day prior to euploid frozen embryo transfer (FET), improve …