Xiu Luo

No ORCID on file · 5 papers in corpus
observational 2026
High serum FSH levels on day 7 of stimulation are negatively associated with oocyte retrieval in GnRH antagonist protocols: real-world evidence from 9,969 IVF cycles in China
Frontiers in endocrinology ·doi:10.3389/fendo.2026.1757107

This study aimed to investigate how levels of serum follicle-stimulating hormone (FSH) on Day 7 of ovarian stimulation are related to the number of oocytes retrieved, and identify any cutoff or threshold point in protocols using gonadotropi…

observational 2026
Impact of estradiol-to-progesterone ratio before progesterone initiation on pregnancy outcomes in frozen embryo transfer cycles with hormone replacement therapy: an analysis of over 25,000 cycles
Frontiers in endocrinology ·doi:10.3389/fendo.2026.1755013

BACKGROUND: Endometrial receptivity in hormone replacement therapy-frozen embryo transfer (HRT-FET) cycles depends on a precisely coordinated estradiol-progesterone environment. An imbalance between estradiol (E2) and progesterone (P) befor…

observational 2025
Comparison of clinical outcomes between use of estradiol transdermal gel and oral estradiol valerate in patients undergoing frozen-thaw embryo transfer: an observational study
Archives of gynecology and obstetrics ·doi:10.1007/s00404-025-08277-z

OBJECTIVE: The purpose of this study was to compare oral estradiol valerate and estradiol transdermal gel for clinical pregnancy outcomes in patients undergoing frozen-thaw embryo transfer (FET). METHODS: This was a prospective study perfo…

observational 2022
High initial FSH dosage reduces the number of available cleavage-stage embryos in a GnRH-antagonist protocol: Real-world data of 8,772 IVF cycles from China
Frontiers in endocrinology ·doi:10.3389/fendo.2022.986438

To evaluate the relationship between the initial follicle stimulating hormone (FSH) dose and the number of available cleavage-stage embryos in in vitro fertilization (IVF) cycles.We included 8772 fresh IVF cycles using a GnRH antagonist pro…

rct 2021
Fixed versus flexible antagonist protocol in women with predicted high ovarian response except PCOS: a randomized controlled trial
BMC pregnancy and childbirth ·doi:10.1186/s12884-021-03833-2

BACKGROUND: No previous study directly compares the fixed day-5 initiation versus the flexible initiation of GnRH antagonist administration in IVF/ICSI for those patients who are predicted as high ovarian responders without PCOS. To evaluat…