Understanding Embryo Stages: Day 3 vs Day 5 Transfer
The stage of your embryo at transfer significantly impacts your due date calculation and pregnancy monitoring. Understanding these differences helps you better prepare for your pregnancy journey.
Day 3 Embryos (Cleavage Stage)
Day 3 embryos are in the cleavage stage, typically containing 6-8 cells. These embryos are transferred earlier in development and require different calculation methods for due date estimation.
Day 5 Embryos (Blastocyst Stage)
Day 5 embryos have reached the blastocyst stage with 100+ cells. This more advanced stage often correlates with higher success rates and requires adjusted due date calculations.
Impact on Due Date Calculation
The embryo's age at transfer directly affects your due date calculation. Understanding this relationship helps ensure accurate pregnancy tracking and appropriate medical care.