IVF Success Rates in Australia

If you are undergoing IVF treatment we know that IVF success rates are important to you, and the below section will help you understand how to interpret IVF statistics.

What is an IVF treatment cycle?

A standard IVF treatment cycle includes

  • Injections with fertility drugs to stimulate a woman’s ovaries (ovarian hyperstimulation);
  • Collection of eggs (or oocytes) from a woman under local anaesthetic, referred to as an ‘oocyte pick up’ or OPU
  • Eggs are fertilised and matured. This may or may not involve a technique called ICSI (intracytoplasmic sperm injection, when a single sperm is injected into each egg to assist fertilisation)
  • An embryo may be transferred to the woman’s uterus, called a fresh embryo transfer; and
  • Any remaining embryos may be frozen and transferred later, during a procedure called a frozen embryo transfer

Once all fresh and frozen embryos from an initial stimulated cycle have been used, the IVF cycle is considered to be complete.

How do you measure IVF success?

Currently there is no established industry standard for reporting or defining IVF success.

IVF success rates are sometimes quoted per complete IVF cycle. A complete IVF cycle may involve the transfer of multiple embryos collected from one egg collection. Success rates reported this way will appear higher than success rates reported per embryo transfer.

At The Fertility Centre, we measure IVF success rates as clinical pregnancies (a pregnancy confirmed by a blood test and ultrasound, usually at around 6-8 weeks) per embryo transfer. Unfortunately not every pregnancy will carry to a live birth, so live births are also quoted per embryo transfer.

We report this way to give you the most realistic understanding of your chance of success following each individual embryo transfer.

It is also important to be aware that not every treatment cycle results in an embryo transfer, because sometimes there are no eggs collected or after eggs have been collected no embryos develop so an embryo transfer cannot take place.

To understand IVF success rates it is important to understand what part of the IVF treatment cycle a particular statistic is measuring before you compare them.

There are also other factors that need to be understood before you begin to compare IVF success rates. These include:

  • A woman’s age. This is the most important factor determining IVF success rates, so you want to make sure you are comparing rates for woman of the same age.
  • Whether the clinic transfers more than one embryo with each transfer. More embryos per transfer may make success rates appear higher. At The Fertility Centre we have a single embryo transfer policy to reduce the risk of multiple births, low birth weight and premature births.
  • Whether the success rates data includes techniques such as ICSI and whether it includes frozen embryo transfers or only fresh embryo transfers.

IVF Success Rates - Queensland

The below graph shows the proportion of The Fertility Centre patients in Queensland who had a clinical pregnancy and live birth from a fresh embryo that was transferred in 2014. The live birth rate ranges from 27.2% per fresh embryo transfer, for patients 25-24 years, to 9.2% per fresh embryo transfer for patients over 40 years. 

IVF Success Rates QLD

During 2014 there were 49 frozen embryo transfers with an overall live birth rate per transfer of 28.6%. Due to the low number of frozen transfers it is not possible to break the cycle outcomes (clinical pregnancy and live birth rates) down into age groups and give a fair representation of an individual patient’s chance of success.  Therefore, we recommend that you discuss your individual chance of success, for your frozen embryo transfer, with your treating clinician.

Want to know more about IVF Success Rates?

There are many factors that contribute to your chance of a successful pregnancy through IVF. During your initial consultation at The Fertility Centre with one of our fertility specialists your individual chance of conception and a baby will be discussed based on your personal circumstances. 

To make an appointment with an experienced fertility specialist at The Fertility Centre, simply call 1800 842 862 or request an appointment online. 



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