On average how many eggs are usually retrieved? How many embryos per cycle?
The average number of eggs will depend above all on the age of the patient taking the IVF treatment. Generally speaking a good number is approximately 8 eggs. In Egg donation cycles there is generally a higher number, around 10-12 eggs. This is due to Spanish Law only allowing young women to donate (18-35 years of age).
The average pregnancy rate is between 65-70% which will also depend on the quality of the sperm sample.