January 18, 2026
IVF Egg Retrieval Process Explained: What to Expect
The IVF egg retrieval process involves administering a trigger shot to mature follicles, followed by a 36-hour wait before the procedure. Follicles between 18mm to 22mm are targeted, with estrogen levels monitored to determine trigger timing. The retrieval itself is a 20-30 minute outpatient procedure using ultrasound-guided needle extraction.
Key Takeaways
Trigger Shot Timing and Follicle Size Optimization
Administering the trigger shot depends on follicle size (18-22mm) and estrogen levels, ensuring eggs are mature before ovulation. Doctors use these metrics to decide when to trigger ovulation, preventing premature egg release.
Estrogen Levels: Key Indicator for Trigger Shot Decisions
Estrogen (estradiol) levels correlate with follicle count, guiding medication dosage for the trigger shot. Patients with more follicles typically have higher estrogen, influencing the treatment protocol.
Egg Retrieval Procedure: Anesthesia and Setup
The 20-30 minute procedure uses sedation (not general anesthesia) while a physician performs ultrasound-guided needle extraction. Patients meet with a fertility doctor and an anesthetist before the procedure.
Sperm Collection Options for Egg Retrieval
Sperm can be collected fresh on the day of retrieval or thawed from frozen samples. This flexibility accommodates out-of-state/international patients or donor sperm usage.
Post-Retrieval Recovery and Fertilization Timeline
After retrieval, eggs are immediately sent to the lab for fertilization. Embryo development begins within 24 hours, with transfers typically scheduled 3-5 days later depending on protocol.
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