The LH surge should be determined by an increase in LH, concomitant to a dr_op in estradiol and a threefold increase in progesterone levels between D- 2 to D- 1
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The % change in progesterone levels at LH Surge for FET-NC was significantly higher in those who conceived
ClassRoom
The role of Natural Cycle IVF in assisted reproduction
DOI:10.1016/j.beem.2018.10.005 by Best Practice & Research Clinical Endocrinology & Metabolism in 2015
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TextBook
Recent Publications
Defining the LH surge in natural cycle frozen-thawed embryo transfer: the role of LH, estradiol, and progesterone
DOI:10.1186/s13048-025-01658-7 by Journal of Ovarian Research in 2025