Blastocyst transfer vs Day-3 transfer — which is better for IVF? Dr Krupa Shah explains success rates, and how the decision is individualise
Blastocyst Transfer vs Day-3 Transfer — Which Gives Better IVF Results? | Ayuh Fertility Centre Ahmedabad
One of the clinical decisions couples encounter during their IVF cycle, often without much advance explanation, is whether their embryos will be transferred on Day 3 or allowed to develop further to Day 5, the blastocyst stage. Understanding the difference between these two approaches, and what the evidence actually shows about their comparative success rates, helps couples engage more meaningfully with this decision when it arises
A Day-3 embryo, also called a cleavage-stage embryo, has typically divided into six to eight cells by this point in development. A blastocyst, reached by Day 5 or sometimes Day 6, has developed into a considerably more complex structure containing over a hundred cells, organised into a fluid-filled cavity, an outer layer that will become the placenta, and an inner cell mass that will become the fetus. This extended culture period allows embryos with limited developmental potential to reveal themselves through arrest before Day 5, while those that successfully reach blastocyst stage have demonstrated a more robust capacity for continued development.
At Ayuh Fertility Centre in Ahmedabad, the general clinical preference, supported by the current evidence base, favours blastocyst culture and transfer for the majority of patients with an adequate number of developing embryos, while recognising that individual circumstances, including limited embryo numbers, can make Day-3 transfer the more appropriate choice in specific situations.
Discuss the Day-3 versus blastocyst transfer decision with the specialists at Ayuh Fertility Centre and understand what the evidence means for your specific IVF cycle in Ahmedabad.
