How many days does it take for IVF to be downregulated?

Patient's question:

No

Doctor's answer:

The purpose is to administer exogenous FSH after down-regulation therapy to promote the synchronous development of a batch of follicles, rather than a single dominant follicle in a natural cycle. The goal is to obtain multiple mature eggs, thereby increasing the number of usable embryos and consequently raising the success rate of in vitro fertilization.