In conventional IVF treatment, eggs are collected from the ovaries when they are fully matured. Using the technique of in vitro maturation, fertility clinics harvest eggs before they have matured and allow the eggs to mature 'in vitro' or outside of the body. Doctors and IVF experts in Mexico believe IVF with IVM technique prevents complications associated with fertility drug use, such as ovarian hyperstimulation syndrome. There are other benefits associated with IVM in Mexico such as cost reduction and higher success rates.
An ultrasound is performed between day 3-5 of the woman's menstrual cycle to check there is a sufficient number of follicles for harvesting. 36 hours before the eggs are to be harvested, an injection of the natural hormone HCG (human chorionic gonadotropin) is given to mature the eggs before they are collected.
Once the eggs have been collected, healthy eggs are matured (cultured) in a laboratory for up to 48 hours. The mature eggs are then fertilized using conventional IVF or IVF with ICSI methods before being transferred back into the womb.
The cost of IVM in Mexico is one third of the standard IVF treatment. In addition to the discomfort of the daily injections and its complications, traditional IVF treatment takes a long preparation process that lasts weeks before the mature eggs are retrieved.

