What are the success chances when transferring a grade 2 embryo? I've got three of these, each being a grade 2 on day 3. Could you also explain how the grading works and what my chances of conceiving might be?

Dr Mubarak Parveez B

General Practitioner

• MBBS
• 2+ Yrs

Consult Now

The success chances of a grade 2 embryo transfer are relatively good, considering day 3 embryo grades are categorized into four quality levels.

• Grade 1 (poor quality): More than 25% fragmentation
• Grade 2 (fair quality): 10-25% fragmentation
• Grade 3 (good quality): 1-10% fragmentation
• Grade 4 (excellent quality): Less than 1% fragmentation

Studies have shown that embryos across all grades can lead to healthy births, but higher-quality embryos have better success rates. For day 3 embryos, the success rates are generally lower compared to blastocyst-stage embryos.

To give you a better idea, here are some general success rates for embryo transfers based on the embryo's quality and stage of development :

• Excellent-grade blastocysts: 65% pregnancy rate and 50% live birth rate
• Good-grade blastocysts: 59.3% pregnancy rate and 49.7% live birth rate
• Average-grade blastocysts: 50.3% pregnancy rate and 42.3% live birth rate
• Poor-grade blastocysts: 33.3% pregnancy rate and 25% live birth rate

Keep in mind that these are general estimates and actual success rates can vary depending on individual circumstances and the specific fertility clinic.

Given that you have three grade 2 embryos, your chances of conceiving are still relatively good, but it's essential to consult with your fertility specialist to discuss the best course of action and determine the most suitable embryo transfer strategy for your specific situation.

Answered 04/07/2025