How do IVF medication protocols vary between frozen embryo transfer (FET) cycles and fresh cycles and what factors determine the differences in hormonal or pharmaceutical requirements?
Gaurav ChauhanContributor
How do IVF medications differ for frozen embryo transfer (FET) cycles versus fresh cycles?
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1. FET cycles usually use medications to prepare the uterus, such as estrogen and progesterone, unlike fresh cycles which often involve stimulating the ovaries to produce multiple eggs.
2. Fresh IVF cycles primarily require drugs for ovarian stimulation like FSH and LH, while FET focuses on hormonal support with estrogen and progesterone to enhance uterine lining.
3. In FET, hormonal supplements prepare the endometrium for implantation since ovarian stimulation is not involved, unlike the fresh cycles which target egg production.