Why you might see this term
A clinic may describe development stage or appearance using a grading system. Ask what that system means in your treatment.
What to keep in mind
Appearance and grading cannot guarantee that an embryo will implant or lead to a live birth.
Sources & further reading
Prepared by ProFertility · Updated 23 October 2026.
Educational information based on the linked sources. This explanation is not an individual diagnosis or a treatment recommendation. A term appearing here does not mean the test is necessary or included in a particular kit.
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