Human chorionic gonadotropin (hCG) measurements may be the earliest indicator of fertility
cycle success, available several weeks before an ultrasound would be diagnostic for …

Background: Numerous studies have reported that transfer of blastocysts derived from
monopronuclear (1PN) zygotes achieved live births. However, the potential value of …

Objective To evaluate which clinical characteristics influence early maternal β-human
chorionic gonadotropin (hCG) and progesterone levels in in vitro fertilization (IVF) …

Recryopreservation (recryo) is occasionally applied in clinical, while the underlying
mechanism of impaired clinical outcomes after recryo remains unclear. In this study, frozen …

Objective To analyze the correlation between TE grading and initial β-hCG serum level after
single euploid embryo transfer. Secondarily, to explore the association between TE grading …

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 …

Objective: To explore the relationship between the blastocyst quality and biochemical
pregnancy or early embryonic cessation of development during the freeze-thaw cycle of in …

In this study, we conducted a retrospective single-centre study of 1664 singleton
pregnancies derived from frozen-thawed blastocyst transfer between January 2017 and …

Gonadotropins, including human chorionic gonadotropin (hCG), have been used since and
for several decades to treat infertility by ovarian stimulation. hCG is the most important …

Research question What is the effect of embryo morphology score on 14-day β-HCG levels
and 14–18-day β-HCG doubling values, and do they have differences in day-3 embryo or …