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IVF success rates

Using fresh embryos, the average success rate, per cycle of treatment started is:

• Almost 30 per cent (in some clinics this figure is higher) in women under 35 years of age; 23-24 per cent for women aged 35-37 years; around 18 per cent for women aged 38-39 years; around 10 per cent for women aged 40-42 years.

• Where frozen embryos are used, success rates are usually slightly lower. For example, in women below 35 years of age, the average success rate is around 18 per cent.

vagina into the ovary. The needle is guided into position using an ultrasound scan with the ultrasound probe in the vagina, then the eggs are sucked down the needle and passed to the laboratory. After the eggs have been collected, it is usual to give the woman progesterone tablets or vaginal suppositories to ensure that the lining of the womb is fully prepared for the embryo to implant.