The window is wide: flexible timing for vitrified–warmed embryo transfer in natural cycles

ConclusionsThe results suggest that the timing of blastocyst transfer in a natural cycle after LH surge is flexible within 24 h. Outcomes are equally good with day of embryo transfer 6 or 7 days after LH surge date. Oestradiol dynamics and progesterone concentration 6 days prior to NC-VET did not have a significant impact on OPR.
Source: Reproductive BioMedicine Online - Category: Reproduction Medicine Source Type: research