The window is wide: flexible timing for frozen-thawed embryo transfer in natural cycles

ConclusionsOur results suggest that the timing of blastocyst transfer in a natural cycle after LH surge is flexible within 24 hours. Outcomes are equally good with day of embryo transfer six or seven days after LH surge date. E2 and P dynamics surrounding the date of surge did not have a significant impact on OPR.
Source: Reproductive BioMedicine Online - Category: Reproduction Medicine Source Type: research