11/01/2026
Day3 verse Day5 Embryo transfer
Day 3 Embryo (Cleavage Stage)
• Embryo has 6–8 cells
• Transfer happens earlier in the lab
• Relies more on the uterus to support development
• Often chosen when:
– Fewer embryos are available
– Embryos may not survive to Day 5 in the lab
🌼 Day 5 Embryo (Blastocyst Stage)
• Embryo has 100+ cells
• Reaches a stage closer to natural implantation timing
• Allows better selection of the strongest embryos
• Higher implantation rates per transfer
• Makes genetic testing (PGT) possible
⚖️ Which is better?
There is no one-size-fits-all answer.
The best choice depends on:
✔️ Embryo number & quality
✔️ Maternal age
✔️ Previous IVF outcomes
✔️ Lab expertise
💡 Key takeaway:
A Day 5 transfer may offer higher success per embryo, but a Day 3 transfer can be the right strategy for many patients. Discuss with your Infertility specialist
Have questions about it ?
👉 Comment “Embryo”
or DM us to learn what may be right for you.
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