IVF Egg Retrieval Calculator
Predict mature eggs and embryos based on follicle counts from your ultrasound
Last updated: December 2024
Enter Follicle Counts
Most likely to contain mature eggs (~90%)
Good chance of maturity (~70%)
Lower chance of maturity (~30%)
Unlikely to be mature (~10%)
Additional Information (Optional)
Common Questions
Do all follicles contain eggs?
No, approximately 10-15% of follicles may be empty. Not all eggs retrieved will be mature (M2 stage). Follicles ≥14mm are most likely to yield mature eggs.
What are typical attrition rates in IVF?
80-90% of large follicles yield mature eggs, 70-80% of mature eggs fertilize normally, and 40-50% of fertilized eggs reach blastocyst stage. Age significantly affects these rates.
How does age affect egg retrieval outcomes?
Age primarily affects egg quality rather than quantity. Women over 35 typically see lower fertilization and blastocyst rates, even with good egg numbers. Genetic abnormalities increase with age.
What is a good number of eggs to retrieve?
Most specialists target 8-15 mature eggs for optimal outcomes. Too few (<5) limits options, while too many (>20) increases OHSS risk. Quality matters more than quantity.
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