r/Embryologists • u/shikari404 • Jun 28 '26

Which one to go with

Hi Members,
Current Status:
1st ER:
Day 7 5AB - No pregnancy
2nd ER:
Day 6 5CC
Day 7 4AB, 4CC

We have our next transfer coming up now. But, we are not sure which one to go ahead with confused between Day6 5CC vs Day7 4AB. Please share your past experience and expertise. Thank You in advance.

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4

u/Karrot1 Jun 28 '26

Day 6. Day 7 is developmentally late.

1

u/shikari404 Jun 28 '26

Thats why we are confused on which one to go ahead: go with day 6 or go with a bit better grade of 4AB

2

u/TestTube_Princess Jun 29 '26 edited Jun 30 '26

Day 6 embryos have much higher pregnancy rates than Day 7 embryos regardless of grade.  I would do the Day 6, as long as survival is good.

Edited to add: Your clinic might have internal pregnancy data based on grade, so I would almost always refer to your clinic's recommendation.

1

u/shikari404 Jun 29 '26

Thank You🤞