Progesterone/estradiol ratio <0.25 on the day of human chorionic gonadotropin administration is associated with adverse pregnancy outcomes in prolonged protocols for in vitro fertilization/intracytoplasmic sperm injection

Objective: It has been suggested that a progesterone/estradiol ratio (P/E2) ≥ 1.0 on the day of human chorionic gonadotropin (hCG) administration indicates premature luteinization and might be associated with an adverse pregnancy; however, a lower limit of this ratio has not been determined. We aime...

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Bibliographic Details
Main Authors: Yuan Li, Keli Luo, Yi Tang, Ge Lin, Guangxiu Lu, Fei Gong
Format: Article
Language:English
Published: Elsevier 2017-02-01
Series:Taiwanese Journal of Obstetrics & Gynecology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1028455916302297