BACKGROUND Estrogens regulate disparate female physiological processes, thus
ensuring reproduction. Altered estrogen levels and signaling have been associated with …

Objective To review the clinical aspects of ovarian hyperstimulation syndrome and provide
recommendations on its prevention. Options Preventative measures, early recognition, and …

OBJECTIVE: To determine threshold β-hCG levels predictive of an ongoing pregnancy (OP),
live birth (LB), and multiple gestation (MG) in IVF cycles resulting from day-3 (D3) vs. day-5 …

Purpose The aim of the present study was to evaluate if the live birth predictive values of β-
hCG levels differ in fresh and vitrified-warmed blastocyst transfer cycles. Methods In the …

Objective To compare serum hCG levels after transfer of a single fresh cleavage embryo and
of a single fresh blastocyst embryo and to determine the predictive value of serum hCG …

Purpose Specific serum beta human chorionic gonadotropin (β-hCG) parameters that can
predict live birth after an embryo transfer have yet to be defined. Methods We performed a …

The current study was undertaken to investigate the use of beta human chorionic
gonadotrophin (β-HCG) concentration and other significant factors to predict the likelihood of …

人绒毛膜促性腺激素(human chorionic gonadotropin, HCG) 是胎盘绒毛膜的合体滋养层细胞
合成的一种糖蛋白激素, 主要由胎盘绒毛滋养层细胞直接分泌. 绒毛滋养层分两层 …

Objective To create a tool that accurately predicts live birth chances after a positive
pregnancy test after elective single embryo transfer (ET). Design Retrospective cohort …

Research question Does the blastocyst development stage on embryo transfer day affect
serum β-human chorionic gonadotrophin (β-HCG) concentration 9 and 16 days after embryo …