Follicle Count & Assessment Tool
Track follicle development and predict egg retrieval outcomes during IVF stimulation
Last updated: December 2024
Expected: 150-200 pg/mL per mature follicle
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Common Questions
How many follicles do I need for IVF?
Most fertility specialists aim for 8-15 mature follicles for optimal results. Having 2-3 lead follicles at 17-18mm with several others at 14-16mm is ideal for triggering ovulation.
What size follicles produce mature eggs?
Follicles 18-22mm are most likely to contain mature eggs. Follicles 15-17mm have a good chance of maturing by retrieval, while those under 14mm are less likely to yield mature eggs.
How fast do follicles grow during IVF?
Follicles typically grow 1-2mm per day during stimulation. Growth may accelerate near the end of the cycle. Your clinic will monitor growth through ultrasound to determine optimal trigger timing.
What affects follicle development?
Age, ovarian reserve (AMH, AFC), stimulation medication dosage, and individual response all affect follicle development. Your doctor adjusts medications based on your specific response pattern.
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