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 …

The aim of this study is to compare the serum β-hCG values post transfer of a cleavage
stage embryo versus a blastocyst stage embryo at equal time intervals post oocyte retrieval …

Objective (s) Beta human chorionic gonadotrophin (β-hCG) is secreted by placenta and
detectable in maternal serum a few days after embryo implantation. The evolution of β-hCG …

Objective To determine the effect of embryonic factors on serum beta human chorionic
gonadotropin (β-hCG) levels in pregnancy and live birth resulting after a single fresh …

Objective What is the role of blastocyst morphology on day16 β-hCG serum levels and
pregnancy outcomes among patients who conceived through IVF cycles with single fresh …

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 …

We previously explored the associations between β-hCG on the 14th day post–embryo
transfer (ET) and reproductive outcomes and established a series of cutoff values to predict …

Objective: To assess the predictive value for clinical pregnancy outcome of β-hCG level at
13 d after embryo transfer. Methods: Retrospective study of IVF clinical pregnancies …

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 …

Possible differences between serum HCG levels in pregnancies achieved after transfer of a
single fresh or a vitrified-warmed blastocyst were evaluated. Out of 1130 single blastocyst …