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Updated: Jun 22, 2025

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Monitoring of controlled ovarian stimulation in IVF
Shahar Kol1, Juan Carlos Castillo Farfan2, Mark P Trolice3
1IVF Unit, Elisha Hospital, Haifa, Israel.
Abstract:
Since the inception of in vitro fertilization (IVF), monitoring of controlled ovarian stimulation (COS) has traditionally involved numerous appointments for ultrasound and laboratory testing to guide medication use and dosing, determine trigger timing, and allow for measures to reduce the risk of ovarian hyperstimulation syndrome (OHSS). Recent advances in the field of assisted reproductive technology (ART) have called into question the timing and frequency of COS monitoring appointments, as discussed in this commentary.
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