It is difficult to predict the exact number of IVF attempts that a couple should make before considering surrogacy, as it depends very much on the characteristics of each patient.
Some studies state that a woman should have become pregnant before reaching the third or fourth cycle of IVF. This will vary depending on the number of eggs obtained in each ovarian stimulation. However, it is considered that after 4 failed IVF cycles, the likelihood of success in a subsequent IVF will no longer increase.
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