IVM refer to taking “eggs” out of the ovary before they are mature, and then nurture them to maturity using special culture fluid so they will be functioning. It is not a different kind of IVF (test-tube baby technique) but just a different way of preparing the “egg” to make embryos. The matured eggs still have to undergo fertilization with the husband’s sperm.

Because the eggs are extracted only after a few days of stimulation, or even without stimulation, the hormonal state of the mother is not as severely changed. This is particularly suitable for patients with polycystic ovaries, or those respond excessively to any hormone stimulation, who may develop a potentially serious condition called ovarian hyperstimulation syndrome (OHSS).