vinwee / baby:
For KK's grading, grade 4 is the best and followed by 3,2,1. However, for our dr's lab, it is the other way round. That means, grade 1 is the best. Vinwee, the grading is done by the embryologist. Going by the speed of growth, no. of cells, appearance etc..
dr f is not particularly in detail with such matters. He will only tell u if u ask him.
baby, on the day of ur ET, he will give u a sheet of paper with the photos of all ur fertilized embbies. In it, the embryologist will write all the info. Like, if ICSI or assisted hatching was done and how many cells are the embbies on that day. He will let u know which are the ones he is trsfring. Maybe at that time, you can ask dr what are the gradings for the embbies.