Nonlinear relationship between serum LH levels on hCG trigger day and live birth rates in patients with fresh embryo transfer: a retrospective cohort study
In assisted reproductive technology (ART), the assessment of sex hormones is indispensable. Maintaining an appropriate level of luteinizing hormone (LH) is crucial for ovarian and endometrial development. However, the relationship between LH concentrations on the hCG trigger day and pregnancy outcomes after fresh e...