Part of Advanced ART & Reproductive Technologies
Blastocyst Culture — Day-5 Transfer
Embryos cultured to Day 5 (blastocyst stage) rather than transferred on Day 2-3. Allows natural selection of the strongest embryos. Modern IVF standard for most patients.
Why Day-5 Over Day-3
By Day 5, embryos that lacked developmental potential self-arrest. The blastocyst-stage embryos transferred have higher implantation rates per embryo — meaning we can transfer ONE and still achieve excellent pregnancy rates, dramatically reducing multiple-pregnancy risk.
When We Use It
- Most IVF cycles with multiple good-quality embryos on Day 3
- Single embryo transfer programs
- PGT cycles (biopsy is done at blastocyst stage)
- Frozen embryo transfer with synchronised endometrium
For patients with few embryos, sometimes Day-3 transfer is preferred to avoid losing all embryos to culture. We decide per-cycle.