Blastocyst culture

This refers to the embryos being allowed to grow till day 5 in the incubator where it becomes a blastocyst .

Procedure : These are then graded and either transferred in case of a fresh transfer or frozen in case of a frozen transfer 

No more than two blastocysts can be implanted at a single transfer and the excess are always stored for future use

If we want to reduce the chance of multiple pregnancy to a minimum,it is preferable to opt for an elective single embryo transfer referred to as e-SET