02/03/2026
Confused between day 3 and day 5 embryo transfer?
During IVF, embryos that grow till day 5 (blastocyst stage) have higher implantation potential because they successfully cross the crucial genomic activation stage.
Not all embryos reach day 5 — only the stronger ones do.
That’s why day 5 transfer often gives better pregnancy outcomes.
Understanding the science helps in making the right fertility decision.
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