Purpose The study was designed to investigate the effect of vitrification and slow freezing for
the cryopreservation of human day 3 embryos on serum β-hCG levels in pregnancies …

Research question Are outlier high values of first-measured human chorionic gonadotrophin
(HCG) following embryo transfer related to pregnancy complications, specifically pre …

Background Some practitioners advocate for freeze only cycles in women undergoing IVF
citing evidence that elevated serum progesterone levels are associated with a decreased …

Objective To investigate whether serum human chorionic gonadotropin (hCG) levels
measured 17 days after oocyte retrieval can predict final clinical pregnancy outcomes in in …

STUDY QUESTION Do number of cells in the transferred cleavage stage embryo and
number of oocytes retrieved for IVF influence maternal hCG concentrations in early …

BACKGROUND: Assisted reproduction treatment (ART) entails a risk of ectopic pregnancy
and early pregnancy loss. Serum HCG has been found to be predictive of pregnancy …

As one of the earliest markers for predicting pregnancy outcomes, human chorionic
gonadotropin (hCG) values have been inconclusive on reliability of the prediction after …

BACKGROUND: The reason for the elevated levels of HCG in assisted reproduction
pregnancies remains unknown. Our hypothesis was that this increase is caused by the …

Serum human chorionic gonadotrophin (HCG) in the second and third week after embryo
transfer has been used for prediction of pregnancy outcome after assisted reproduction …

Background: To detect the predictive value of beta human chorionic gonadotropin (β-hCG)
levels 16 days post embryo transfer (ET) regarding detection of an ectopic pregnancy (EP) in …