Embryo Grade Explainer

Decode a day-3 or blastocyst grade in plain English. What it means, what it does not, and good questions for your embryologist.


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Your embryo

When was your embryo graded?

Grade is descriptive, not deterministic. Higher grades are generally associated with better odds, but grade is not a guarantee. Lower-graded embryos regularly become healthy babies.
Your report

Your Embryo Grade, Explained

A plain-English breakdown. Not a verdict on outcome.

Your grade

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What each part means
A picture
Honest, gentle context

Questions to ask your embryologist
  • How does this grade affect the chance of implantation, in your experience?
  • Was this embryo biopsied for PGT-A? If so, what did it show?
  • If we have multiple embryos, what is the recommended transfer order?
  • How does the embryo look on day 6 if it has not been transferred or frozen yet?
  • Is there anything about the grading you would want me to know?
This is educational information, not medical advice or a diagnosis. Always confirm anything here with your own clinician or clinic. If the tool ever contradicts what they have told you, your clinic is right.